363 KiB
Release notes
Scrapy 2.17.0 (2026-07-07)
Highlights:
- Security bug fixes
- HTTP/2 and SOCKS proxy support for HttpxDownloadHandler
- Improved settings for changing allowed TLS versions
Security bug fixes
s3:// requests now use HTTPS by default, instead of plaintext HTTP.
Previously, :class:`~scrapy.core.downloader.handlers.s3.S3DownloadHandler` sent signed S3 requests over plaintext HTTP unless request.meta["is_secure"] was set to a true value, exposing the request path, the AWS Authorization header, the X-Amz-Security-Token header (when using temporary credentials), and the response contents to network attackers, who could also tamper with responses. See the 76g3-c3x4-crvx security advisory for details.
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To restore the previous behavior for a given request, set request.meta["is_secure"] to False.
Deprecations
The DOWNLOADER_CLIENT_TLS_METHOD setting is deprecated. You should use the :setting:`DOWNLOAD_TLS_MIN_VERSION` and/or :setting:`DOWNLOAD_TLS_MAX_VERSION` settings instead if you want to change the TLS method selection. (:issue:`3288`, :issue:`6546`)
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The following spider attributes are deprecated in favor of settings:
http_user (use :setting:`HTTPAUTH_USER`)
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http_pass (use :setting:`HTTPAUTH_PASS`)
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http_auth_domain (use :setting:`HTTPAUTH_DOMAIN`)
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The scrapy.commands.ScrapyCommand.help() method is deprecated. It was never called by Scrapy. (:issue:`7626`, :issue:`7633`)
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The following TLS-related functions and constants, intended for internal use, are deprecated:
- scrapy.core.downloader.tls.METHOD_TLS
- scrapy.core.downloader.tls.METHOD_TLSv10
- scrapy.core.downloader.tls.METHOD_TLSv11
- scrapy.core.downloader.tls.METHOD_TLSv12
- scrapy.core.downloader.tls.openssl_methods
- scrapy.core.downloader.tls.DEFAULT_CIPHERS
- scrapy.utils.ssl.ffi_buf_to_string()
- scrapy.utils.ssl.get_temp_key_info()
- scrapy.utils.ssl.x509name_to_string()
(:issue:`6546`, :issue:`7619`, :issue:`7665`)
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The CRAWLSPIDER_FOLLOW_LINKS setting is deprecated. You can set follow=False in your rules to achieve the same effect. (:issue:`7592`)
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Instantiating :class:`~scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware` without a crawler argument is deprecated. (:issue:`7655`)
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Instantiating :class:`~scrapy.spidermiddlewares.referer.RefererMiddleware` without a settings argument is deprecated. (:issue:`7664`)
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New features
Added support for HTTP/2 requests to :class:`~scrapy.core.downloader.handlers._httpx.HttpxDownloadHandler`. It requires setting the new :setting:`HTTPX_HTTP2_ENABLED` setting to True. (:issue:`7575`)
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Added support for SOCKS proxies to :class:`~scrapy.core.downloader.handlers._httpx.HttpxDownloadHandler`. (:issue:`747`, :issue:`7575`)
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Added :setting:`DOWNLOAD_TLS_MIN_VERSION` and :setting:`DOWNLOAD_TLS_MAX_VERSION` settings as replacements for the DOWNLOADER_CLIENT_TLS_METHOD setting (which is now deprecated). Compared to the old setting, they support specifying a range of allowed versions and support newer TLS versions. (:issue:`4821`, :issue:`6546`)
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Added :setting:`HTTPAUTH_USER`, :setting:`HTTPAUTH_PASS` and :setting:`HTTPAUTH_DOMAIN` settings and :reqmeta:`http_user`, :reqmeta:`http_pass` and :reqmeta:`http_auth_domain` meta keys as more flexible ways to set HTTP authentication data. (:issue:`7590`)
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Added a :reqmeta:`verbatim_url` meta key that can be set to True to skip request URL canonicalization. (:issue:`7473`)
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Added deny_tags and deny_attrs arguments to :class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>`. (:issue:`6321`, :issue:`7679`)
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:attr:`scrapy.Item.fields` now returns the fields in the definition order instead of the alphabetical one. (:issue:`7015`, :issue:`7694`)
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Added a :setting:`RETRY_GIVE_UP_LOG_LEVEL` setting, a :reqmeta:`give_up_log_level` meta key and a give_up_log_level argument of the :func:`~scrapy.downloadermiddlewares.retry.get_retry_request` function that allow changing the log level of the message logged when the retry limit has been reached. (:issue:`4622`, :issue:`5297`, :issue:`7567`)
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It's now possible to set :setting:`DOWNLOADER_CLIENT_TLS_CIPHERS` to None to use the default ciphers of the underlying TLS implementation. (:issue:`7499`, :issue:`7665`)
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Improvements
:class:`~scrapy.FormRequest` is no longer deprecated, only its from_response() method is still deprecated. (:issue:`7561`, :issue:`7671`)
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Switched the item definition in the default project template from a :class:`scrapy.item.Item` to a dataclass. (:issue:`7493`, :issue:`7513`)
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Fixed deprecation warnings with pyOpenSSL 26.3.0. (:issue:`7619`)
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Removed the runtime warnings for :attr:`Spider.allowed_domains <scrapy.Spider.allowed_domains>` containing URLs or domains with ports instead of just domains and for spider classes having a start_url attribute instead of :class:`~scrapy.spiders.Spider.start_urls`. Please use :doc:`scrapy-lint <scrapy-lint:index>` to find mistakes in your spider code instead. (:issue:`4421`, :issue:`7627`)
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:func:`scrapy.utils.test.get_crawler` now disables :setting:`TELNETCONSOLE_ENABLED` by default. (:issue:`7644`)
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Other code refactoring and improvements. (:issue:`7409`, :issue:`7593`, :issue:`7594`, :issue:`7611`, :issue:`7649`)
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Bug fixes
:class:`~scrapy.core.downloader.handlers._httpx.HttpxDownloadHandler` no longer ignores proxy credentials for redirected or retried requests. (:issue:`7601`, :issue:`7630`)
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:class:`~scrapy.extensions.feedexport.GCSFeedStorage` now closes the temporary file after the upload. (:issue:`7546`)
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Fixed scrapy shell <URL> running a full spider crawl when there is a spider for the requested URL. This bug was introduced in Scrapy 2.13.0. (:issue:`7552`, :issue:`7557`)
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The :setting:`IMAGES_STORE_S3_ACL` and :setting:`IMAGES_STORE_GCS_ACL` settings are no longer ignored. This bug was introduced in Scrapy 2.12.0. (:issue:`7597`, :issue:`7614`)
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:class:`~scrapy.core.downloader.handlers.ftp.FTPDownloadHandler` now closes the connection after making the request. (:issue:`7602`, :issue:`7667`)
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Removed the deprecated spider argument from the pipeline defined in the default project template. (:issue:`7676`)
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Fixed scrapy genspider --edit not working. (:issue:`7260`, :issue:`7683`)
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When a :class:`~scrapy.crawler.Crawler` instance is passed to :meth:`AsyncCrawlerRunner.create_crawler() <scrapy.crawler.AsyncCrawlerRunner.create_crawler>` or :meth:`CrawlerRunner.create_crawler() <scrapy.crawler.CrawlerRunner.create_crawler>`, settings from both classes are now merged, previously only the settings from the :class:`~scrapy.crawler.Crawler` instance were used. (:issue:`1280`, :issue:`7647`)
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Fixed several issues with cookie handling in :func:`scrapy.utils.request.request_to_curl`. (:issue:`7603`, :issue:`7675`, :issue:`7684`)
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Fixed :class:`scrapy.resolver.CachingThreadedResolver` not disabling the cache when :setting:`DNSCACHE_ENABLED` is set to False. (:issue:`7663`)
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Fixed :func:`scrapy.utils.response.open_in_browser` not removing comments when looking for the <base> tag. (:issue:`7506`)
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Fixed checking for deprecated methods in custom :setting:`ITEM_PROCESSOR` implementations. (:issue:`7589`)
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Fixed :func:`scrapy.utils.url.strip_url` corrupting some URLs with credentials. (:issue:`7604`, :issue:`7605`)
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:func:`scrapy.utils.misc.rel_has_nofollow` now ignores the case when looking for "nofollow" strings. (:issue:`7632`)
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Fixed an exception in :class:`scrapy.utils.sitemap.Sitemap` when parsing some malformed sitemaps. (:issue:`7686`, :issue:`7687`)
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Documentation
Mentioned :doc:`scrapy-lint <scrapy-lint:index>` in the docs. (:issue:`4421`, :issue:`7627`)
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Added the docs about :ref:`security considerations <security>`. (:issue:`7389`, :issue:`7678`)
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Improved the :ref:`item pipeline docs <topics-item-pipeline>`. (:issue:`2350`, :issue:`7676`)
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Documented which stats are collected by :class:`~scrapy.extensions.corestats.CoreStats`. (:issue:`7421`)
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Switched documentation examples from using :class:`scrapy.item.Item` to using dataclasses. (:issue:`7493`, :issue:`7513`)
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Added feature comparison tables to the :ref:`download handler <download-handlers-ref>` docs. (:issue:`7575`)
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Improved the docs for :ref:`logging settings <logging-settings>`. (:issue:`6909`, :issue:`7668`)
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Documented a way to :ref:`improve startup time and memory usage <large-project-startup>` by using :setting:`SPIDER_MODULES`. (:issue:`7576`, :issue:`7600`)
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Clarified handling of the type argument of :class:`~scrapy.Selector`. (:issue:`7704`)
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Other documentation improvements and fixes. (:issue:`4954`, :issue:`6120`, :issue:`7286`, :issue:`7564`, :issue:`7573`, :issue:`7598`, :issue:`7599`, :issue:`7698`)
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Quality assurance
Fixed deprecation warnings with pytest 9.1.0. (:issue:`7621`)
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Type hints improvements and fixes. (:issue:`6958`, :issue:`7586`)
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CI and test improvements and fixes. (:issue:`5954`, :issue:`7002`, :issue:`7017`, :issue:`7247`, :issue:`7508`, :issue:`7545`, :issue:`7566`, :issue:`7574`, :issue:`7585`, :issue:`7595`, :issue:`7608`, :issue:`7610`, :issue:`7612`, :issue:`7616`, :issue:`7625`, :issue:`7637`, :issue:`7639`, :issue:`7640`, :issue:`7641`, :issue:`7642`, :issue:`7643`, :issue:`7644`, :issue:`7645`, :issue:`7646`, :issue:`7654`, :issue:`7655`, :issue:`7664`, :issue:`7672`, :issue:`7677`, :issue:`7680`, :issue:`7682`, :issue:`7692`)
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Scrapy 2.16.0 (2026-05-19)
Highlights:
- Official support for Python 3.14
- Support for Twisted 26.4.0+
Modified requirements
Increased the minimum versions of the following dependencies:
- service_identity: 18.1.0 → 23.1.0
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Added support for Twisted 26.4.0+. (:issue:`7347`, :issue:`7505`, :issue:`7520`)
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Added support for Python 3.14. (:issue:`6604`, :issue:`7460`)
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Backward-incompatible changes
The following classes and functions, intended for internal use by :class:`~scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler` and :class:`~scrapy.core.downloader.handlers.http2.H2DownloadHandler`, have been made private:
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- scrapy.core.downloader.handlers.http11.ScrapyAgent
- scrapy.core.downloader.handlers.http11.ScrapyProxyAgent
- scrapy.core.downloader.handlers.http11.TunnelingAgent
- scrapy.core.downloader.handlers.http11.TunnelingTCP4ClientEndpoint
- scrapy.core.downloader.handlers.http11.tunnel_request_data()
- scrapy.core.downloader.handlers.http2.ScrapyH2Agent
(:issue:`7496`, :issue:`7510`)
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Deprecations
scrapy.FormRequest is deprecated. You can use the :doc:`form2request <form2request:index>` library instead, see :ref:`form`. (:issue:`6438`)
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scrapy.utils.python.MutableChain is deprecated. (:issue:`7504`)
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Deprecation removals
The start_requests() method of :class:`~scrapy.Spider`, deprecated in 2.13.0, is removed and no longer called. Use :meth:`~scrapy.Spider.start` instead, or both to maintain support for lower Scrapy versions. (:issue:`7490`)
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Support for process_start_requests() methods of :ref:`spider middlewares <topics-spider-middleware>`, deprecated in 2.13.0, is removed. Use :meth:`~scrapy.spidermiddlewares.SpiderMiddleware.process_start` instead, or both to maintain support for lower Scrapy versions. (:issue:`7490`)
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Support for synchronous process_spider_output() methods of spider middlewares, deprecated in Scrapy 2.13.0, is removed. You should upgrade the affected middlewares to have asynchronous process_spider_output() methods. (:issue:`7504`)
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The spider arguments of the following methods of :class:`~scrapy.core.scraper.Scraper`, deprecated in Scrapy 2.13.0, are removed:
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- close_spider()
- enqueue_scrape()
- handle_spider_error()
- handle_spider_output()
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HTTP/1.0 support code, deprecated in Scrapy 2.13.0, is removed. This includes:
- scrapy.core.downloader.handlers.http10.HTTP10DownloadHandler
- The scrapy.core.downloader.webclient module.
- The DOWNLOADER_HTTPCLIENTFACTORY setting.
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The following functions, deprecated in Scrapy 2.13.0, are removed, you should import them from :mod:`w3lib.url` directly instead:
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- scrapy.utils.url.add_or_replace_parameter()
- scrapy.utils.url.add_or_replace_parameters()
- scrapy.utils.url.any_to_uri()
- scrapy.utils.url.canonicalize_url()
- scrapy.utils.url.file_uri_to_path()
- scrapy.utils.url.is_url()
- scrapy.utils.url.parse_data_uri()
- scrapy.utils.url.parse_url()
- scrapy.utils.url.path_to_file_uri()
- scrapy.utils.url.safe_download_url()
- scrapy.utils.url.safe_url_string()
- scrapy.utils.url.url_query_cleaner()
- scrapy.utils.url.url_query_parameter()
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The following test-related code, deprecated in Scrapy 2.13.0, is removed:
- the scrapy.utils.testproc module
- the scrapy.utils.testsite module
- scrapy.utils.test.assert_gcs_environ()
- scrapy.utils.test.get_ftp_content_and_delete()
- scrapy.utils.test.get_gcs_content_and_delete()
- scrapy.utils.test.mock_google_cloud_storage()
- scrapy.utils.test.skip_if_no_boto()
- scrapy.utils.test.TestSpider
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scrapy.utils.versions.scrapy_components_versions(), deprecated in Scrapy 2.13.0, is removed, you can use :func:`scrapy.utils.versions.get_versions` instead. (:issue:`7487`)
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scrapy.downloadermiddlewares.ajaxcrawl.AjaxCrawlMiddleware and scrapy.utils.url.escape_ajax(), deprecated in Scrapy 2.13.0, are removed. (:issue:`7487`)
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The __init__() method of priority queue classes (see :setting:`SCHEDULER_PRIORITY_QUEUE`) now needs to support a keyword-only start_queue_cls parameter, not supporting it was deprecated in Scrapy 2.13.0. (:issue:`7487`)
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scrapy.spiders.init.InitSpider, deprecated in Scrapy 2.13.0, is removed. (:issue:`7487`)
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New features
New features and improvements for :class:`~scrapy.core.downloader.handlers._httpx.HttpxDownloadHandler`:
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Support for proxies.
Support for the :reqmeta:`download_latency` meta key.
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Support for :attr:`Response.certificate <scrapy.http.Response.certificate>`.
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Default headers set by the httpx library are no longer added to requests.
(:issue:`7441`, :issue:`7524`)
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:class:`~scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler` now skips HTTPS proxy certificate verification when the :setting:`DOWNLOAD_VERIFY_CERTIFICATES` setting is set to False. (:issue:`7496`)
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Improvements
:func:`time.monotonic` is used instead of :func:`time.time` to calculate elapsed time in various places. (:issue:`7377`)
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Improved extraction of the file extension from the URL in :class:`~scrapy.pipelines.files.FilesPipeline`. (:issue:`4225`, :issue:`7414`)
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Other code refactoring and improvements. (:issue:`7401`)
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Bug fixes
:class:`~scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler` now raises an exception when a request has an https:// destination and an https:// proxy, which is not supported by this handler. Previously it tried to connect to the proxy via HTTP in this case. (:issue:`7496`)
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:class:`~scrapy.core.downloader.handlers.http2.H2DownloadHandler` now raises an exception for requests with http:// URLs instead of trying to connect, which is not supported by this handler. (:issue:`7496`)
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:class:`~scrapy.core.downloader.handlers.http2.H2DownloadHandler` no longer adds the :status pseudo-header to :attr:`Response.headers <scrapy.http.Response.headers>`. (:issue:`7441`)
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Fixed :func:`scrapy.utils.response.open_in_browser` removing the <head> tag when adding the <base> tag. (:issue:`7459`)
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Documentation
Documented that :class:`~scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler` doesn't support HTTPS proxies for HTTPS destinations and that :class:`~scrapy.core.downloader.handlers.http2.H2DownloadHandler` doesn't support proxies at all. (:issue:`7496`)
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Added an example of using :class:`logging.handlers.TimedRotatingFileHandler` to rotate Scrapy logs. (:issue:`3628`, :issue:`7501`)
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Added a CITATION.cff file. (:issue:`7502`, :issue:`7519`)
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Mentioned DOWNLOADER_CLIENT_TLS_METHOD in :ref:`bans`. (:issue:`5232`, :issue:`7518`)
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Other documentation improvements and fixes. (:issue:`7417`, :issue:`7463`, :issue:`7472`, :issue:`7480`, :issue:`7489`, :issue:`7503`, :issue:`7507`)
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Quality assurance
Added tests that connect to https://books.toscrape.com/ to test the behavior with a real website. These tests are marked with the requires_internet pytest mark and can be skipped with e.g. -m 'not requires_internet' if you cannot or don't want to run them. (:issue:`7520`)
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Type hints improvements and fixes. (:issue:`7492`, :issue:`7532`)
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CI and test improvements and fixes. (:issue:`7441`, :issue:`7466`, :issue:`7491`, :issue:`7496`)
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Scrapy 2.15.2 (2026-04-28)
Bug fixes
Fixed links in https://docs.scrapy.org/llms.txt (:issue:`7467`)
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Scrapy 2.15.1 (2026-04-23)
Bug fixes
Sharing of the SSL context between multiple connections, introduced in Scrapy 2.15.0, is reverted as it caused problems and wasn't actually needed. (:issue:`7445`, :issue:`7450`)
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Fixed :meth:`scrapy.settings.BaseSettings.getwithbase` failing on keys with dots that aren't import names. It now works the way it worked before Scrapy 2.15.0, without trying to match class objects and import path. A separate method, :func:`~scrapy.settings.BaseSettings.get_component_priority_dict_with_base`, was added that does that, and it is now used for :ref:`component priority dictionaries <component-priority-dictionaries>`. (:issue:`7426`, :issue:`7449`)
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Documentation rendering improvements. (:issue:`7452`, :issue:`7454`)
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Scrapy 2.15.0 (2026-04-09)
Highlights:
- Experimental support for running without a Twisted reactor
- Experimental httpx-based download handler
Backward-incompatible changes
The built-in HTTP :ref:`download handlers <download-handlers-ref>` now raise Scrapy-specific exceptions instead of implementation-specific ones, see :ref:`download-handlers-exceptions`. This can affect user code that handles downloader exceptions, such as process_exception() methods of custom :ref:`downloader middlewares <topics-downloader-middleware-custom>`. (:issue:`7208`)
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In order to fix a long-standing bug with handling of asynchronous storages, the following changes were made to media pipeline classes, which can impact some of the user code that subclasses them or calls their methods directly:
overrides of :meth:`scrapy.pipelines.media.MediaPipeline.media_downloaded` and :meth:`~scrapy.pipelines.files.FilesPipeline.file_downloaded` can now return coroutines
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:meth:`~scrapy.pipelines.files.FilesPipeline.media_downloaded`, :meth:`~scrapy.pipelines.files.FilesPipeline.file_downloaded` and :meth:`~scrapy.pipelines.images.ImagesPipeline.image_downloaded` now return coroutines
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(:issue:`2183`, :issue:`6369`, :issue:`7182`)
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Request and Response objects: __slots__ and setter changes:
:class:`scrapy.http.Request` and :class:`scrapy.http.Response` now define __slots__. Assigning arbitrary attributes to instances (for example, response.foo = 1) will raise AttributeError. Store per-request/response data in the request/response meta mapping instead of attaching new attributes to the objects.
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If you maintain custom Request or Response subclasses that relied on dynamic instance attributes, either add '__dict__' to your subclass __slots__ to allow dynamic attributes, or migrate per-instance state to meta or explicit documented attributes.
The setters for headers, flags and cookies no longer coerce falsy values into None. For example, request.headers = {} now stores an empty :class:`scrapy.http.headers.Headers` instance (not None), and request.flags = [] remains an empty list instead of being set to None. Update code that relied on is None checks or the previous coercion behaviour.
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(:issue:`7036`, :issue:`7367`, :issue:`7374`)
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Deprecation removals
The context factory class set as the value of the DOWNLOADER_CLIENTCONTEXTFACTORY setting is now required to support the method argument of __init__(), recommended since Scrapy 1.2.0. (:issue:`7353`)
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Deprecations
scrapy.mail.MailSender is deprecated. Please use :mod:`smtplib`, :mod:`twisted.mail.smtp` or other 3rd party email libraries. (:issue:`7249`, :issue:`7263`)
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The scrapy.extensions.statsmailer.StatsMailer extension is deprecated. You can instead implement your own notifications by handling the :signal:`spider_closed` signal. (:issue:`7249`, :issue:`7263`)
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The MEMUSAGE_NOTIFY_MAIL setting is deprecated. You can instead implement your own notifications by handling the :signal:`memusage_warning_reached` and :signal:`spider_closed` signals. (:issue:`7249`, :issue:`7263`)
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The DNS_RESOLVER setting was renamed to :setting:`TWISTED_DNS_RESOLVER` and the old name is deprecated. (:issue:`7350`, :issue:`7361`)
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The DOWNLOADER_CLIENTCONTEXTFACTORY setting is deprecated. If you were using it to switch to scrapy.core.downloader.contextfactory.BrowserLikeContextFactory, please use the new :setting:`DOWNLOAD_VERIFY_CERTIFICATES` setting instead. If you cannot use the default context factory for some other reason, please subclass the :ref:`download handler <download-handlers-ref>` instead. (:issue:`7352`, :issue:`7379`)
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scrapy.core.downloader.contextfactory.BrowserLikeContextFactory is deprecated. You can set the new :setting:`DOWNLOAD_VERIFY_CERTIFICATES` setting to True instead. (:issue:`7379`)
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The following implementation details of the context factory handling code are deprecated:
- scrapy.core.downloader.contextfactory.AcceptableProtocolsContextFactory
- scrapy.core.downloader.contextfactory.load_context_factory_from_settings()
- scrapy.core.downloader.contextfactory.ScrapyClientContextFactory
- scrapy.core.downloader.tls.ScrapyClientTLSOptions
(:issue:`7353`, :issue:`7391`)
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Passing :class:`str` instead of :class:`bytes` to :class:`scrapy.utils.sitemap.Sitemap` and :func:`scrapy.utils.sitemap.sitemap_urls_from_robots` is deprecated. (:issue:`7007`)
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scrapy.utils.misc.walk_modules() is deprecated. You can use :func:`scrapy.utils.misc.walk_modules_iter` instead. (:issue:`7388`)
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scrapy.shell.Shell.inthread is deprecated. You can use :attr:`scrapy.shell.Shell.fetch_available` instead to check if :func:`~scrapy.shell.Shell.fetch` can be used. (:issue:`7395`)
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scrapy.commands.ScrapyCommand.set_crawler() is deprecated. (:issue:`7276`)
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New features
Added an experimental mode for running Scrapy without installing a Twisted reactor: set :setting:`TWISTED_REACTOR_ENABLED` to False to enable it. This mode has limitations, refer to :ref:`its documentation <asyncio-without-reactor>` for details. As long as it's experimental, its behavior and related features and APIs may change in future Scrapy releases in a breaking way. (:issue:`6219`, :issue:`7185`, :issue:`7186`, :issue:`7187`, :issue:`7188`, :issue:`7190`, :issue:`7197`, :issue:`7199`, :issue:`7209`, :issue:`7228`, :issue:`7355`, :issue:`7366`, :issue:`7385`, :issue:`7395`)
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Added the :func:`scrapy.utils.reactorless.is_reactorless` function that checks if there is a running asyncio event loop but no Twisted reactor. (:issue:`7185`, :issue:`7199`)
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Changed :func:`scrapy.utils.asyncio.is_asyncio_available` to return True if there is a running asyncio loop, even if no Twisted reactor is installed. (:issue:`7185`, :issue:`7199`)
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Added an experimental download handler that uses the httpx library and doesn't require a Twisted reactor: :class:`~scrapy.core.downloader.handlers._httpx.HttpxDownloadHandler`. As long as it's experimental, its behavior may change in future Scrapy releases in a breaking way. (:issue:`6805`, :issue:`7239`, :issue:`7368`, :issue:`7384`)
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Added the :setting:`DOWNLOAD_BIND_ADDRESS` setting as a global counterpart to the per-request :reqmeta:`bindaddress` meta key. (:issue:`7266`, :issue:`7283`)
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Added the :setting:`DOWNLOAD_VERIFY_CERTIFICATES` setting that can be set to True to make Scrapy abort HTTPS requests when the server certificate is invalid or doesn't match the domain. (:issue:`7379`)
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The built-in HTTP :ref:`download handlers <download-handlers-ref>` now raise Scrapy-specific exceptions instead of implementation-specific ones, to allow unified handling of similar problems caused by different implementations. The default value of the :setting:`RETRY_EXCEPTIONS` setting was updated replacing Twisted-specific exceptions with these new ones. The exceptions:
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:exc:`~scrapy.exceptions.CannotResolveHostError`
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:exc:`~scrapy.exceptions.DownloadCancelledError`
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:exc:`~scrapy.exceptions.DownloadConnectionRefusedError`
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:exc:`~scrapy.exceptions.DownloadFailedError`
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:exc:`~scrapy.exceptions.DownloadTimeoutError`
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:exc:`~scrapy.exceptions.ResponseDataLossError`
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:exc:`~scrapy.exceptions.UnsupportedURLSchemeError`
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Added the :signal:`memusage_warning_reached` signal emitted by the :class:`~scrapy.extensions.memusage.MemoryUsage` extension when the memory usage reaches :setting:`MEMUSAGE_WARNING_MB`. (:issue:`7249`, :issue:`7263`)
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Added :meth:`Headers.to_tuple_list() <scrapy.http.headers.Headers.to_tuple_list>` that returns headers as a list of (key, value) tuples. (:issue:`7239`)
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:class:`~scrapy.core.downloader.handlers.s3.S3DownloadHandler` now uses the download handler configured for the "https" scheme to make requests instead of always using :class:`~scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler`. (:issue:`7369`, :issue:`7370`)
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Added :func:`scrapy.utils.misc.walk_modules_iter` as a replacement for scrapy.utils.misc.walk_modules() that returns an iterable instead of a list. (:issue:`7388`)
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Improvements
:func:`asyncio.to_thread` is now used instead of :func:`twisted.internet.threads.deferToThread` in the built-in feed storages, media pipeline storages and the :func:`scrapy.utils.decorators.inthread` decorator when available. (:issue:`7183`, :issue:`7184`, :issue:`7349`)
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Improved memory footprint of :class:`~scrapy.Request` and :class:`~scrapy.http.Response` objects by adding __slots__ and omitting empty lists and dicts in some internal attributes. (:issue:`7036`, :issue:`7367`, :issue:`7374`)
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:class:`~scrapy.core.downloader.contextfactory._ScrapyClientContextFactory` no longer mutates the SSL context, to avoid the behavior that was deprecated in pyOpenSSL 25.1.0. (:issue:`6859`, :issue:`7353`)
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Improved memory usage of :class:`~scrapy.spiders.sitemap.SitemapSpider` and :class:`scrapy.utils.sitemap.Sitemap`. (:issue:`3529`, :issue:`7007`)
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Improved the scheduling behavior of :class:`~scrapy.pqueues.DownloaderAwarePriorityQueue` when crawling multiple domains. (:issue:`7293`, :issue:`7351`)
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:class:`~scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler` and :class:`~scrapy.core.downloader.handlers.http2.H2DownloadHandler` now handle TLS verbose logging (see :setting:`DOWNLOADER_CLIENT_TLS_VERBOSE_LOGGING`) directly instead of relying on :class:`~scrapy.core.downloader.contextfactory._ScrapyClientContextFactory`. (:issue:`7387`)
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The server certificate verification code now correctly handles certificates with IP addresses in subjectAltName. (:issue:`7353`)
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Improved reliability of :func:`scrapy.utils.trackref.get_oldest`. (:issue:`1758`, :issue:`7375`)
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Other code refactoring and improvements. (:issue:`7210`, :issue:`7238`, :issue:`7376`, :issue:`7386`, :issue:`7395`, :issue:`7405`, :issue:`7410`)
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Bug fixes
:ref:`Media pipelines <topics-media-pipeline>` should now wait for uploads to asynchronous storages (e.g. :class:`~scrapy.pipelines.files.S3FilesStore`) to complete. (:issue:`2183`, :issue:`6369`, :issue:`7182`)
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Fixed merging *_BASE settings (e.g. merging :setting:`DOWNLOADER_MIDDLEWARES` with :setting:`DOWNLOADER_MIDDLEWARES_BASE`) when a component is referred to by a class object in one setting and by a string import path in the other one. (:issue:`6912`, :issue:`6993`)
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scrapy runspider and scrapy crawl now set the exit code to 1 if an exception happened early (this was broken since Scrapy 2.13.0). (:issue:`6820`, :issue:`7255`)
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Fixed repeated warnings about data loss (see :setting:`DOWNLOAD_FAIL_ON_DATALOSS`) not being suppressed in :class:`~scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler`. (:issue:`7222`)
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Improved FTP connection management in :class:`scrapy.pipelines.files.FTPFilesStore`. (:issue:`7256`)
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Fixed the spider variable in the :ref:`shell <topics-shell>`, which wasn't available since Scrapy 2.13.0. (:issue:`7395`)
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Documentation
The llms.txt and llms-full.txt files and Markdown versions of pages are now generated when the HTML documentation is built. (:issue:`7380`)
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Added a "Copy as Markdown" button to the HTML documentation. (:issue:`7380`)
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Added :ref:`docs for using Pydantic models as items <pydantic-items>`. (:issue:`6955`, :issue:`6966`)
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Documented :ref:`job directory contents <job-dir-contents>`. (:issue:`4842`, :issue:`5260`)
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Improved docs for :attr:`~scrapy.Request.dont_filter`. (:issue:`6398`, :issue:`7245`)
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Clarified that settings related to :setting:`TWISTED_DNS_RESOLVER` are only taken into account if the selected resolver supports them. (:issue:`7385`)
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Other documentation improvements and fixes. (:issue:`7248`, :issue:`7274`, :issue:`7406`, :issue:`7408`)
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Quality assurance
Added the no-reactor test environment that doesn't install a Twisted reactor and uses pytest-asyncio instead of pytest-twisted to run asynchronous test functions. (:issue:`6952`, :issue:`7189`, :issue:`7233`, :issue:`7234`, :issue:`7254`, :issue:`7259`)
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Fixed running tests with pytest-xdist. (:issue:`7216`, :issue:`7257`)
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Type hints improvements and fixes. (:issue:`7300`, :issue:`7331`)
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CI and test improvements and fixes. (:issue:`7060`, :issue:`7223`, :issue:`7232`, :issue:`7241`, :issue:`7250`, :issue:`7256`, :issue:`7276`, :issue:`7277`, :issue:`7279`, :issue:`7329`, :issue:`7363`, :issue:`7381`, :issue:`7402`)
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Scrapy 2.14.2 (2026-03-12)
Security bug fixes
Values from the Referrer-Policy header of HTTP responses are no longer executed as Python callables. See the cwxj-rr6w-m6w7 security advisory for details.
In line with the standard, 301 redirects of POST requests are converted into GET requests.
Converting to a GET request implies not only a method change, but also omitting the body and Content-* headers in the redirect request. On cross-origin redirects (for example, cross-domain redirects), this is effectively a security bug fix for scenarios where the body contains secrets.
Deprecations
Passing a response URL string as the first positional argument to :meth:`scrapy.spidermiddlewares.referer.RefererMiddleware.policy` is deprecated. Pass a :class:`~scrapy.http.Response` instead.
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The parameter has also been renamed to response to reflect this change. The old parameter name (resp_or_url) is deprecated.
New features
Added a new setting, :setting:`REFERER_POLICIES`, to allow customizing supported referrer policies.
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Bug fixes
Made additional redirect scenarios convert to GET in line with the standard:
- Only POST 302 redirects are converted into GET requests; other methods are preserved.
- HEAD 303 redirects are not converted into GET requests.
- GET 303 redirects do not have their body or standard Content-* headers removed.
Redirects where the original request body is dropped now also have their Content-Encoding, Content-Language and Content-Location headers removed, in addition to the Content-Type and Content-Length headers that were already being removed.
Redirects now preserve the source URL fragment if the redirect URL does not include one. This is useful when using browser-based download handlers, such as scrapy-playwright or scrapy-zyte-api, while letting Scrapy handle redirects.
The Referer header is now removed on redirect if :class:`~scrapy.spidermiddlewares.referer.RefererMiddleware` is disabled.
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The handling of the Referer header on redirects now takes into account the Referer-Policy header of the response that triggers the redirect.
Scrapy 2.14.1 (2026-01-12)
Deprecations
scrapy.utils.defer.maybeDeferred_coro() is deprecated. (:issue:`7212`)
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Bug fixes
Fixed custom stats collectors that require a spider argument in their open_spider() and close_spider() methods not receiving the argument when called by the engine.
Note, however, that the spider argument is now deprecated and will stop being passed in a future version of Scrapy.
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Quality assurance
Replaced deprecated codecov/test-results-action@v1 GitHub Action with codecov/codecov-action@v5. (:issue:`7180`, :issue:`7215`)
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Scrapy 2.14.0 (2026-01-05)
Highlights:
- More coroutine-based replacements for Deferred-based APIs
- The default priority queue is now DownloaderAwarePriorityQueue
- Dropped support for Python 3.9 and PyPy 3.10
- Improved and documented the API for custom download handlers
Modified requirements
Dropped support for Python 3.9. (:issue:`7121`)
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Dropped support for PyPy 3.10. (:issue:`7050`)
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Increased the minimum versions of the following dependencies:
Restored support for brotlicffi dropped in Scrapy 2.13.4. Its minimum supported version is now 1.2.0.0. (:issue:`7160`)
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Backward-incompatible changes
If you set the :setting:`TWISTED_REACTOR` setting to a :ref:`non-asyncio value <disable-asyncio>` at the :ref:`spider level <spider-settings>`, you may now need to set the :setting:`FORCE_CRAWLER_PROCESS` setting to True when running Scrapy via :ref:`its command-line tool <topics-commands-crawlerprocess>` to avoid a reactor mismatch exception. (:issue:`6845`)
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The log_count/* stats no longer count some of the early messages that they counted before. While the earliest log messages, emitted before the counter is initialized, were never counted, the counter initialization now happens later than in previous Scrapy versions. You may need to adjust expected values if you retrieve and compare values of these stats in your code. (:issue:`7046`)
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The classes listed below are now :term:`abstract base classes <abstract base class>`. They cannot be instantiated directly and their subclasses need to override the abstract methods listed below to be able to be instantiated. If you previously instantiated these classes directly, you will now need to subclass them and provide trivial (e.g. empty) implementations for the abstract methods.
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:class:`scrapy.commands.ScrapyCommand`
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:meth:`~scrapy.commands.ScrapyCommand.run`
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:meth:`~scrapy.commands.ScrapyCommand.short_desc`
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:class:`scrapy.exporters.BaseItemExporter`
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:meth:`~scrapy.exporters.BaseItemExporter.export_item`
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:class:`scrapy.extensions.feedexport.BlockingFeedStorage`
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:meth:`~scrapy.extensions.feedexport.BlockingFeedStorage._store_in_thread`
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:class:`scrapy.middleware.MiddlewareManager`
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:meth:`~scrapy.middleware.MiddlewareManager._get_mwlist_from_settings`
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:class:`scrapy.spidermiddlewares.referer.ReferrerPolicy`
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:meth:`~scrapy.spidermiddlewares.referer.ReferrerPolicy.referrer`
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Scrapy no longer passes a spider argument to any methods of the :setting:`stats collector <STATS_CLASS>`. It wasn't passed in many of the calls even in older Scrapy versions, so we don't expect existing custom stats collector implementations to require a spider argument. If your implementation needs a :class:`~scrapy.Spider` instance, you can get it from the :class:`~scrapy.crawler.Crawler` instance passed to the constructor. (:issue:`7011`)
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:class:`scrapy.middleware.MiddlewareManager` no longer includes code for handling open_spider() and close_spider() component methods. As this code was only used for pipelines it was moved into :class:`scrapy.pipelines.ItemPipelineManager`. This change should only affect custom subclasses of :class:`~scrapy.middleware.MiddlewareManager`. The following code was moved:
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- scrapy.middleware.MiddlewareManager.open_spider()
- scrapy.middleware.MiddlewareManager.close_spider()
- Code in scrapy.middleware.MiddlewareManager._add_middleware() that processes open_spider() and close_spider() component methods.
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:meth:`scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware.process_request` now returns a coroutine, previously it returned a :class:`~twisted.internet.defer.Deferred` object or None. The robot_parser() method was also changed to return a coroutine. This change only impacts code that subclasses :class:`~scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware` or calls its methods directly. (:issue:`6802`)
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The built-in :ref:`download handlers <download-handlers-ref>` have been refactored, changing the signatures of their methods. This change should only affect user code that subclasses any of these handlers or calls their methods directly. (:issue:`6778`, :issue:`7164`)
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:meth:`scrapy.pipelines.media.MediaPipeline.process_item` now returns a coroutine, previously it returned a :class:`~twisted.internet.defer.Deferred` object. This change only impacts code that calls this method directly. (:issue:`7177`)
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Deprecation removals
The from_settings() method of the following components, deprecated in Scrapy 2.12.0, is removed. You should use from_crawler() instead.
:class:`scrapy.dupefilters.RFPDupeFilter`
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:class:`scrapy.mail.MailSender`
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:class:`scrapy.middleware.MiddlewareManager`
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:class:`scrapy.core.downloader.contextfactory.ScrapyClientContextFactory`
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:class:`scrapy.pipelines.files.FilesPipeline`
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:class:`scrapy.pipelines.images.ImagesPipeline`
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Scrapy no longer calls from_settings() methods of 3rd-party :ref:`components <topics-components>`, deprecated in Scrapy 2.12.0. You should define a from_crawler() method instead. (:issue:`7126`)
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The initialization flow of :class:`scrapy.pipelines.media.MediaPipeline` and its subclasses was simplified, it now mandates from_crawler() methods and crawler arguments of __init__() methods. Not using these was deprecated in Scrapy 2.12.0. (:issue:`7126`)
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The REQUEST_FINGERPRINTER_IMPLEMENTATION setting, deprecated in Scrapy 2.12.0, is removed. (:issue:`7126`)
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The scrapy.utils.misc.create_instance() function, deprecated in Scrapy 2.12.0, is removed. Use :func:`scrapy.utils.misc.build_from_crawler` instead. (:issue:`7126`)
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The scrapy.core.downloader.Downloader._get_slot_key() function, deprecated in Scrapy 2.12.0, is removed. Use :meth:`scrapy.core.downloader.Downloader.get_slot_key` instead. (:issue:`7126`)
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The scrapy.twisted_version attribute, deprecated in Scrapy 2.12.0, is removed. You should instead use the :attr:`twisted.version` attribute directly. (:issue:`7126`)
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The following utility functions, deprecated in Scrapy 2.12.0, are removed:
- scrapy.utils.defer.process_chain_both()
- scrapy.utils.python.equal_attributes()
- scrapy.utils.python.flatten()
- scrapy.utils.python.iflatten()
- scrapy.utils.request.request_authenticate()
- scrapy.utils.test.assert_samelines()
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scrapy.utils.serialize.ScrapyJSONDecoder, deprecated in Scrapy 2.12.0, is removed. (:issue:`7126`)
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The scrapy.extensions.feedexport.build_storage() function, deprecated in Scrapy 2.12.0, is removed, you can instead call the builder callable directly. (:issue:`7126`)
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scrapy.spidermiddlewares.offsite.OffsiteMiddleware, deprecated in Scrapy 2.11.2, is removed. :class:`scrapy.downloadermiddlewares.offsite.OffsiteMiddleware` should be used instead. (:issue:`6926`)
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Deprecations
The following methods that return a :class:`~twisted.internet.defer.Deferred` are deprecated in favor of their coroutine-based replacements:
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:class:`scrapy.core.downloader.handlers.DownloadHandlers`
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download_request() (use :meth:`~scrapy.core.downloader.handlers.DownloadHandlers.download_request_async`)
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:class:`scrapy.core.downloader.middleware.DownloaderMiddlewareManager`
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download() (use :meth:`~scrapy.core.downloader.middleware.DownloaderMiddlewareManager.download_async`)
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:class:`scrapy.core.engine.ExecutionEngine`
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start() (use :meth:`~scrapy.core.engine.ExecutionEngine.start_async`)
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stop() (use :meth:`~scrapy.core.engine.ExecutionEngine.stop_async`)
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close() (use :meth:`~scrapy.core.engine.ExecutionEngine.close_async`)
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open_spider() (use :meth:`~scrapy.core.engine.ExecutionEngine.open_spider_async`)
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close_spider() (use :meth:`~scrapy.core.engine.ExecutionEngine.close_spider_async`)
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download() (use :meth:`~scrapy.core.engine.ExecutionEngine.download_async`)
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:class:`scrapy.core.scraper.Scraper`
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open_spider() (use :meth:`~scrapy.core.scraper.Scraper.open_spider_async`)
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call_spider() (use :meth:`~scrapy.core.scraper.Scraper.call_spider_async`)
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close_spider() (use :meth:`~scrapy.core.scraper.Scraper.close_spider_async`)
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handle_spider_output() (use :meth:`~scrapy.core.scraper.Scraper.handle_spider_output_async`)
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start_itemproc() (use :meth:`~scrapy.core.scraper.Scraper.start_itemproc_async`)
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:class:`scrapy.core.spidermw.SpiderMiddlewareManager`
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scrape_response() (use :meth:`~scrapy.core.spidermw.SpiderMiddlewareManager.scrape_response_async`)
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:class:`scrapy.crawler.Crawler`
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stop() (use :meth:`~scrapy.crawler.Crawler.stop_async`)
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:class:`scrapy.pipelines.ItemPipelineManager`
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process_item() (use :meth:`~scrapy.pipelines.ItemPipelineManager.process_item_async`)
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open_spider() (use :meth:`~scrapy.pipelines.ItemPipelineManager.open_spider_async`)
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close_spider() (use :meth:`~scrapy.pipelines.ItemPipelineManager.close_spider_async`)
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:class:`scrapy.signalmanager.SignalManager`
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send_catch_log_deferred() (use :meth:`~scrapy.signalmanager.SignalManager.send_catch_log_async`)
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scrapy.utils.signal.send_catch_log_deferred() (use :func:`scrapy.utils.signal.send_catch_log_async`)
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(:issue:`6791`, :issue:`6842`, :issue:`6979`, :issue:`6997`, :issue:`6999`, :issue:`7005`, :issue:`7043`, :issue:`7069`, :issue:`7161`, :issue:`7164`)
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The following spider attributes are deprecated in favor of settings:
download_maxsize (use :setting:`DOWNLOAD_MAXSIZE`)
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download_timeout (use :setting:`DOWNLOAD_TIMEOUT`)
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download_warnsize (use :setting:`DOWNLOAD_WARNSIZE`)
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max_concurrent_requests (use :setting:`CONCURRENT_REQUESTS`)
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user_agent (use :setting:`USER_AGENT`)
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(:issue:`6988`, :issue:`6994`, :issue:`7038`, :issue:`7039`, :issue:`7117`, :issue:`7176`)
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Returning a :class:`~twisted.internet.defer.Deferred` from the following user-defined functions is deprecated in favor of defining them as coroutine functions:
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- spider callbacks and errbacks (which was never officially supported and may work incorrectly)
- the process_request(), process_response() and process_exception() methods of custom downloader middlewares
- the process_item(), open_spider() and close_spider() methods of custom pipelines
- signal handlers
- the download_request() and close() methods of custom download handlers
(:issue:`6718`, :issue:`6778`, :issue:`7069`, :issue:`7147`, :issue:`7148`, :issue:`7149`, :issue:`7150`, :issue:`7151`, :issue:`7161`, :issue:`7164`, :issue:`7179`)
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Passing a spider argument to the following methods is deprecated:
:meth:`scrapy.core.spidermw.SpiderMiddlewareManager.process_start`
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:meth:`scrapy.core.downloader.Downloader.fetch`
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:meth:`scrapy.core.downloader.Downloader._get_slot`
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:meth:`scrapy.core.downloader.handlers.DownloadHandlers.download_request`
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all public methods of :class:`scrapy.statscollectors.StatsCollector`
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:meth:`scrapy.spidermiddlewares.base.BaseSpiderMiddleware.process_spider_output`
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:meth:`scrapy.spidermiddlewares.base.BaseSpiderMiddleware.process_spider_output_async`
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all process_*() methods of built-in downloader middlewares
all process_*() methods of built-in spider middlewares
:meth:`scrapy.pipelines.media.MediaPipeline.open_spider`
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:meth:`scrapy.pipelines.media.MediaPipeline.process_item`
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(:issue:`6750`, :issue:`6927`, :issue:`6984`, :issue:`7006`, :issue:`7011`, :issue:`7033`, :issue:`7037`, :issue:`7045`, :issue:`7178`)
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Instantiating subclasses of :class:`scrapy.middleware.MiddlewareManager` without a :class:`~scrapy.crawler.Crawler` instance is deprecated. (:issue:`6984`)
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For the following user-defined functions and methods requiring a spider argument is deprecated, if you need a :class:`~scrapy.Spider` instance inside them you should get it from the :class:`~scrapy.crawler.Crawler` instance (you may need to refactor your code to save that instance in e.g. the from_crawler() method):
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the process_request(), process_response() and process_exception() methods of custom downloader middlewares
the process_spider_input(), process_spider_output(), process_spider_output_async() and process_spider_exception() methods of custom spider middlewares
the process_item() method of custom pipelines
the fetch() method of a custom :setting:`DOWNLOADER`
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(:issue:`6927`, :issue:`6984`, :issue:`7006`, :issue:`7037`)
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The following things in custom download handlers are deprecated:
not having a lazy attribute (you should define it as True if you want to keep the current behavior)
returning a :class:`~twisted.internet.defer.Deferred` from the download_request() method (you should refactor it to return a coroutine; you also need to remove the spider argument when doing this)
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not having a close() method, having a synchronous one or one that returns a :class:`~twisted.internet.defer.Deferred` (you should refactor it to return a coroutine or add an empty one if you don't have it)
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(:issue:`6778`, :issue:`7164`)
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Custom implementations of :setting:`ITEM_PROCESSOR` should now define process_item_async(), open_spider_async() and close_spider_async() methods instead of, or in addition to, process_item(), open_spider() and close_spider(). (:issue:`7005`, :issue:`7043`)
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The CONCURRENT_REQUESTS_PER_IP setting is deprecated, use :setting:`CONCURRENT_REQUESTS_PER_DOMAIN` instead. (:issue:`6917`, :issue:`6921`)
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The scrapy.core.downloader.handlers.http module is deprecated. You should import :class:`scrapy.core.downloader.handlers.http11.HTTP11DownloadHandler` directly instead of importing the scrapy.core.downloader.handlers.http.HTTPDownloadHandler alias. (:issue:`7079`)
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The scrapy.utils.decorators.defers() decorator is deprecated, you can use :func:`twisted.internet.defer.maybeDeferred` directly or reimplement this decorator in your code. (:issue:`7164`)
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scrapy.spiders.CrawlSpider._parse_response() is deprecated, use :meth:`scrapy.spiders.CrawlSpider.parse_with_rules` instead. (:issue:`4463`, :issue:`6804`)
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The functions that add a delay to a Deferred are deprecated, their underlying Twisted functions can be used instead, either directly if a delay isn't needed, or with some explicit way to add a delay if it's needed:
scrapy.utils.defer.mustbe_deferred() (you can use :func:`twisted.internet.defer.maybeDeferred`)
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scrapy.utils.defer.defer_succeed() (you can use :func:`twisted.internet.defer.succeed`)
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scrapy.utils.defer.defer_fail() (you can use :func:`twisted.internet.defer.fail`)
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scrapy.utils.defer.defer_result() (you can use :func:`twisted.internet.defer.succeed` and :func:`twisted.internet.defer.fail`)
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New features
Added :class:`scrapy.crawler.AsyncCrawlerProcess` and :class:`scrapy.crawler.AsyncCrawlerRunner` as counterparts to :class:`~scrapy.crawler.CrawlerProcess` and :class:`~scrapy.crawler.CrawlerRunner` that offer coroutine-based APIs. (:issue:`6789`, :issue:`6790`, :issue:`6796`, :issue:`6817`, :issue:`6845`, :issue:`7034`)
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Added coroutine counterparts to some of the Deferred-based APIs:
:class:`scrapy.core.downloader.handlers.DownloadHandlers`
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:meth:`~scrapy.core.downloader.handlers.DownloadHandlers.download_request_async` (to download_request())
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:class:`scrapy.core.downloader.middleware.DownloaderMiddlewareManager`
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:meth:`~scrapy.core.downloader.middleware.DownloaderMiddlewareManager.download_async` (to download())
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:class:`scrapy.core.engine.ExecutionEngine`
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:meth:`~scrapy.core.engine.ExecutionEngine.start_async` (to start())
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:meth:`~scrapy.core.engine.ExecutionEngine.stop_async` (to stop())
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:meth:`~scrapy.core.engine.ExecutionEngine.close_async` (to close())
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:meth:`~scrapy.core.engine.ExecutionEngine.open_spider_async` (to open_spider())
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:meth:`~scrapy.core.engine.ExecutionEngine.close_spider_async` (to close_spider())
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:meth:`~scrapy.core.engine.ExecutionEngine.download_async` (to download())
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:class:`scrapy.core.scraper.Scraper`
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:meth:`~scrapy.core.scraper.Scraper.open_spider_async` (to open_spider())
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:meth:`~scrapy.core.scraper.Scraper.close_spider_async` (to close_spider())
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:meth:`~scrapy.core.scraper.Scraper.start_itemproc_async` (to start_itemproc())
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:class:`scrapy.crawler.Crawler`
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:meth:`~scrapy.crawler.Crawler.crawl_async` (to crawl())
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:meth:`~scrapy.crawler.Crawler.stop_async` (to stop())
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:class:`scrapy.pipelines.ItemPipelineManager`
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:meth:`~scrapy.pipelines.ItemPipelineManager.process_item_async` (to process_item())
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:meth:`~scrapy.pipelines.ItemPipelineManager.open_spider_async` (to open_spider())
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:meth:`~scrapy.pipelines.ItemPipelineManager.close_spider_async` (to close_spider())
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:class:`scrapy.signalmanager.SignalManager`
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:meth:`~scrapy.signalmanager.SignalManager.send_catch_log_async` (to send_catch_log_deferred())
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(:issue:`6781`, :issue:`6791`, :issue:`6792`, :issue:`6795`, :issue:`6801`, :issue:`6817`, :issue:`6842`, :issue:`6997`, :issue:`7005`, :issue:`7043`, :issue:`7069`,:issue:7164, :issue:`7202`)
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The default value of the :setting:`SCHEDULER_PRIORITY_QUEUE` setting is now 'scrapy.pqueues.DownloaderAwarePriorityQueue'. (:issue:`6924`, :issue:`6940`)
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Added :class:`scrapy.extensions.logcount.LogCount`, an enabled-by-default extension that is responsible for the log_count/* stats. Previously, this code was in :class:`scrapy.crawler.Crawler` and couldn't be disabled. (:issue:`7046`)
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Added :meth:`scrapy.spiders.CrawlSpider.parse_with_rules` as a public replacement for _parse_response(). (:issue:`4463`, :issue:`6804`)
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Added :func:`scrapy.utils.asyncio.is_asyncio_available` as an alternative to :func:`scrapy.utils.reactor.is_asyncio_reactor_installed` with a future-proof name and semantics. (:issue:`6827`)
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The API for :ref:`download handlers <topics-download-handlers>`, previously undocumented, has been modernized and documented. An optional base class, :class:`scrapy.core.downloader.handlers.base.BaseDownloadHandler`, has been added to simplify writing custom download handlers that conform to the current API. (:issue:`4944`, :issue:`6778`, :issue:`7164`)
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Added :func:`scrapy.utils.defer.ensure_awaitable`, which can be helpful to call user-defined functions that can return coroutines, Deferreds or values directly. (:issue:`7005`)
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The requests.seen file, written by :class:`~scrapy.dupefilters.RFPDupeFilter` when :ref:`job persistence <topics-jobs>` is enabled, now uses line buffering to reduce data loss in spider crashes. (:issue:`6019`, :issue:`7094`)
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Images downloaded by :class:`~scrapy.pipelines.images.ImagesPipeline` are now automatically transposed based on EXIF data. (:issue:`6525`, :issue:`6975`)
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Improvements
Refactored internal functions to use coroutines instead of Deferreds. (:issue:`6795`, :issue:`6852`, :issue:`6855`, :issue:`6858`, :issue:`7159`)
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Commands that don't need a :class:`~scrapy.crawler.CrawlerProcess` instance no longer create it. (:issue:`6824`)
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Improved :command:`shell` help formatting when using IPython 9+. (:issue:`6915`, :issue:`6980`)
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Bug fixes
Setting :setting:`FILES_STORE` or :setting:`IMAGES_STORE` to None now correctly disables the respective pipeline. (:issue:`6964`, :issue:`6969`)
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:class:`~scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware` now uses the URL set in the <base> tag as the base URL when redirecting to a relative URL. (:issue:`7042`, :issue:`7047`)
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Passing None as a value of the :reqmeta:`download_slot` request meta key is now handled in the same way as not setting this meta key at all. (:issue:`7172`)
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Fixed parsing of the first line of robots.txt files that have a BOM. (:issue:`6195`, :issue:`7095`)
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Documentation
Added :ref:`documentation <topics-download-handlers>` about download handlers, their API and built-in handlers. (:issue:`4944`, :issue:`7164`)
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Added a section about the scrapy-spider-metadata library to the :ref:`spider argument docs <spiderargs-scrapy-spider-metadata>`. (:issue:`6676`, :issue:`6957`, :issue:`7116`)
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Improved :ref:`the docs <coroutine-deferred-apis>` about coroutine-based and Deferred-based APIs. (:issue:`6800`, :issue:`7146`)
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Other documentation improvements and fixes. (:issue:`7058`, :issue:`7076`, :issue:`7109`, :issue:`7195`, :issue:`7198`)
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Quality assurance
Switched from twisted.trial to pytest-twisted and replaced remaining unittest and twisted.trial features with pytest ones. (:issue:`6658`, :issue:`6873`, :issue:`6884`, :issue:`6938`)
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Enabled fancy pytest asserts. (:issue:`6888`)
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Added Sphinx Lint to the pre-commit configuration. (:issue:`6920`)
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CI and test improvements and fixes. (:issue:`6649`, :issue:`6769`, :issue:`6821`, :issue:`6835`, :issue:`6836`, :issue:`6846`, :issue:`6883`, :issue:`6885`, :issue:`6889`, :issue:`6905`, :issue:`6928`, :issue:`6933`, :issue:`6941`, :issue:`6942`, :issue:`6945`, :issue:`6947`, :issue:`6960`, :issue:`6968`, :issue:`6972`, :issue:`6974`, :issue:`6996`, :issue:`7003`, :issue:`7012`, :issue:`7013`, :issue:`7050`, :issue:`7059`, :issue:`7070`, :issue:`7073`, :issue:`7118`, :issue:`7127`, :issue:`7141`, :issue:`7143`, :issue:`7145`, :issue:`7173`)
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Code cleanups. (:issue:`6803`, :issue:`6838`, :issue:`6849`, :issue:`6875`, :issue:`6876`, :issue:`6892`, :issue:`6930`, :issue:`6949`, :issue:`6970`, :issue:`6977`, :issue:`6986`, :issue:`7008`, :issue:`7177`)
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Scrapy 2.13.4 (2025-11-17)
Security bug fixes
Improved protection against decompression bombs in :class:`~scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware` for responses compressed using the br and deflate methods: if a single compressed chunk would be larger than the response size limit (see :setting:`DOWNLOAD_MAXSIZE`) when decompressed, decompression is no longer carried out. This is especially important for the br (Brotli) method that can provide a very high compression ratio. Please, see the CVE-2025-6176 and GHSA-2qfp-q593-8484 security advisories for more information. (:issue:`7134`)
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Modified requirements
The minimum supported version of the optional brotli package is now 1.2.0. (:issue:`7134`)
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The brotlicffi and brotlipy packages can no longer be used to decompress Brotli-compressed responses. Please install the brotli package instead. (:issue:`7134`)
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Other changes
Restricted the maximum supported Twisted version to 25.5.0, as Scrapy currently uses some private APIs changed in later Twisted versions. (:issue:`7142`)
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Stopped setting the COVERAGE_CORE environment variable in tests, it didn't have an effect but caused the coverage module to produce a warning or an error. (:issue:`7137`)
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Removed the documentation build dependency on the deprecated sphinx-hoverxref module. (:issue:`6786`, :issue:`6922`)
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Scrapy 2.13.3 (2025-07-02)
Changed the values for :setting:`DOWNLOAD_DELAY` (from 0 to 1) and :setting:`CONCURRENT_REQUESTS_PER_DOMAIN` (from 8 to 1) in the default project template. (:issue:`6597`, :issue:`6918`, :issue:`6923`)
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Improved :class:`scrapy.core.engine.ExecutionEngine` logic related to initialization and exception handling, fixing several cases where the spider would crash, hang or log an unhandled exception. (:issue:`6783`, :issue:`6784`, :issue:`6900`, :issue:`6908`, :issue:`6910`, :issue:`6911`)
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Fixed a Windows issue with :ref:`feed exports <topics-feed-exports>` using :class:`scrapy.extensions.feedexport.FileFeedStorage` that caused the file to be created on the wrong drive. (:issue:`6894`, :issue:`6897`)
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Allowed running tests with Twisted 25.5.0+ again. Pytest 8.4.1+ is now required for running tests in non-pinned envs as support for the new Twisted version was added in that version. (:issue:`6893`)
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Fixed running tests with lxml 6.0.0+. (:issue:`6919`)
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Added a deprecation notice for scrapy.spidermiddlewares.offsite.OffsiteMiddleware to :ref:`the Scrapy 2.11.2 release notes <release-2.11.2>`. (:issue:`6926`)
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Updated :ref:`contribution docs <topics-contributing>` to refer to ruff instead of black. (:issue:`6903`)
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Added .venv/ and .vscode/ to .gitignore. (:issue:`6901`, :issue:`6907`)
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Scrapy 2.13.2 (2025-06-09)
Fixed a bug introduced in Scrapy 2.13.0 that caused results of request errbacks to be ignored when the errback was called because of a downloader error. (:issue:`6861`, :issue:`6863`)
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Added a note about the behavior change of :func:`scrapy.utils.reactor.is_asyncio_reactor_installed` to its docs and to the "Backward-incompatible changes" section of :ref:`the Scrapy 2.13.0 release notes <release-2.13.0>`. (:issue:`6866`)
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Improved the message in the exception raised by :func:`scrapy.utils.test.get_reactor_settings` when there is no reactor installed. (:issue:`6866`)
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Updated the :class:`scrapy.crawler.CrawlerRunner` examples in :ref:`topics-practices` to install the reactor explicitly, to fix reactor-related errors with Scrapy 2.13.0 and later. (:issue:`6865`)
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Fixed scrapy fetch not working with scrapy-poet. (:issue:`6872`)
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Fixed an exception produced by :class:`scrapy.core.engine.ExecutionEngine` when it's closed before being fully initialized. (:issue:`6857`, :issue:`6867`)
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Improved the README, updated the Scrapy logo in it. (:issue:`6831`, :issue:`6833`, :issue:`6839`)
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Restricted the Twisted version used in tests to below 25.5.0, as some tests fail with 25.5.0. (:issue:`6878`, :issue:`6882`)
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Updated type hints for Twisted 25.5.0 changes. (:issue:`6882`)
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Removed the old artwork. (:issue:`6874`)
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Scrapy 2.13.1 (2025-05-28)
Give callback requests precedence over start requests when priority values are the same.
This makes changes from 2.13.0 to start request handling more intuitive and backward compatible. For scenarios where all requests have the same priorities, in 2.13.0 all start requests were sent before the first callback request. In 2.13.1, same as in 2.12 and lower, start requests are only sent when there are not enough pending callback requests to reach concurrency limits.
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Added a deepwiki badge to the README. (:issue:`6793`)
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Fixed a typo in the code example of :ref:`start-requests-lazy`. (:issue:`6812`, :issue:`6815`)
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Fixed a typo in the :ref:`coroutine-support` section of the documentation. (:issue:`6822`)
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Made this page more prominently listed in PyPI project links. (:issue:`6826`)
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Scrapy 2.13.0 (2025-05-08)
Highlights:
The asyncio reactor is now enabled by default
Replaced start_requests() (sync) with :meth:`~scrapy.Spider.start` (async) and changed how it is iterated
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Added the :reqmeta:`allow_offsite` request meta key
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Spider middlewares that don't support asynchronous spider output are deprecated
Added a base class for :ref:`universal spider middlewares <universal-spider-middleware>`
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Modified requirements
Dropped support for PyPy 3.9. (:issue:`6613`)
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Added support for PyPy 3.11. (:issue:`6697`)
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Backward-incompatible changes
The default value of the :setting:`TWISTED_REACTOR` setting was changed from None to "twisted.internet.asyncioreactor.AsyncioSelectorReactor". This value was used in newly generated projects since Scrapy 2.7.0 but now existing projects that don't explicitly set this setting will also use the asyncio reactor. You can :ref:`change this setting in your project <disable-asyncio>` to use a different reactor. (:issue:`6659`, :issue:`6713`)
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The iteration of start requests and items no longer stops once there are requests in the scheduler, and instead runs continuously until all start requests have been scheduled.
To reproduce the previous behavior, see :ref:`start-requests-lazy`. (:issue:`6729`)
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An unhandled exception from the :meth:`~scrapy.spidermiddlewares.SpiderMiddleware.open_spider` method of a :ref:`spider middleware <topics-spider-middleware>` no longer stops the crawl. (:issue:`6729`)
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In scrapy.core.engine.ExecutionEngine:
The second parameter of open_spider(), start_requests, has been removed. The start requests are determined by the spider parameter instead (see :meth:`~scrapy.Spider.start`).
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The slot attribute has been renamed to _slot and should not be used.
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In scrapy.core.engine, the Slot class has been renamed to _Slot and should not be used. (:issue:`6729`)
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The slot :ref:`telnet variable <telnet-vars>` has been removed. (:issue:`6729`)
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In scrapy.core.spidermw.SpiderMiddlewareManager, process_start_requests() has been replaced by process_start(). (:issue:`6729`)
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The now-deprecated start_requests() method, when it returns an iterable instead of being defined as a generator, is now executed after the :ref:`scheduler <topics-scheduler>` instance has been created. (:issue:`6729`)
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When using :setting:`JOBDIR`, :ref:`start requests <start-requests>` are now serialized into their own, s-suffixed priority folders. You can set :setting:`SCHEDULER_START_DISK_QUEUE` to None or "" to change that, but the side effects may be undesirable. See :setting:`SCHEDULER_START_DISK_QUEUE` for details. (:issue:`6729`)
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The URL length limit, set by the :setting:`URLLENGTH_LIMIT` setting, is now also enforced for start requests. (:issue:`6777`)
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Calling :func:`scrapy.utils.reactor.is_asyncio_reactor_installed` without an installed reactor now raises an exception instead of installing a reactor. This shouldn't affect normal Scrapy use cases, but it may affect 3rd-party test suites that use Scrapy internals such as :class:`~scrapy.crawler.Crawler` and don't install a reactor explicitly. If you are affected by this change, you most likely need to install the reactor before running Scrapy code that expects it to be installed. (:issue:`6732`, :issue:`6735`)
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The from_settings() method of :class:`~scrapy.spidermiddlewares.urllength.UrlLengthMiddleware`, deprecated in Scrapy 2.12.0, is removed earlier than the usual deprecation period (this was needed because after the introduction of the :class:`~scrapy.spidermiddlewares.base.BaseSpiderMiddleware` base class and switching built-in spider middlewares to it those middlewares need the :class:`~scrapy.crawler.Crawler` instance at run time). Please use from_crawler() instead. (:issue:`6693`)
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scrapy.utils.url.escape_ajax() is no longer called when a :class:`~scrapy.Request` instance is created. It was only useful for websites supporting the _escaped_fragment_ feature which most modern websites don't support. If you still need this you can modify the URLs before passing them to :class:`~scrapy.Request`. (:issue:`6523`, :issue:`6651`)
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Deprecation removals
Removed old deprecated name aliases for some signals:
- stats_spider_opened (use spider_opened instead)
- stats_spider_closing and stats_spider_closed (use spider_closed instead)
- item_passed (use item_scraped instead)
- request_received (use request_scheduled instead)
(:issue:`6654`, :issue:`6655`)
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Deprecations
The start_requests() method of :class:`~scrapy.Spider` is deprecated, use :meth:`~scrapy.Spider.start` instead, or both to maintain support for lower Scrapy versions. (:issue:`456`, :issue:`3477`, :issue:`4467`, :issue:`5627`, :issue:`6729`)
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The process_start_requests() method of :ref:`spider middlewares <topics-spider-middleware>` is deprecated, use :meth:`~scrapy.spidermiddlewares.SpiderMiddleware.process_start` instead, or both to maintain support for lower Scrapy versions. (:issue:`456`, :issue:`3477`, :issue:`4467`, :issue:`5627`, :issue:`6729`)
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The __init__ method of priority queue classes (see :setting:`SCHEDULER_PRIORITY_QUEUE`) should now support a keyword-only start_queue_cls parameter. (:issue:`6752`)
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Spider middlewares that don't support asynchronous spider output are deprecated. The async iterable downgrading feature, needed for using such middlewares with asynchronous callbacks and with other spider middlewares that produce asynchronous iterables, is also deprecated. Please update all such middlewares to support asynchronous spider output. (:issue:`6664`)
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Functions that were imported from :mod:`w3lib.url` and re-exported in :mod:`scrapy.utils.url` are now deprecated, you should import them from :mod:`w3lib.url` directly. They are:
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- scrapy.utils.url.add_or_replace_parameter()
- scrapy.utils.url.add_or_replace_parameters()
- scrapy.utils.url.any_to_uri()
- scrapy.utils.url.canonicalize_url()
- scrapy.utils.url.file_uri_to_path()
- scrapy.utils.url.is_url()
- scrapy.utils.url.parse_data_uri()
- scrapy.utils.url.parse_url()
- scrapy.utils.url.path_to_file_uri()
- scrapy.utils.url.safe_download_url()
- scrapy.utils.url.safe_url_string()
- scrapy.utils.url.url_query_cleaner()
- scrapy.utils.url.url_query_parameter()
(:issue:`4577`, :issue:`6583`, :issue:`6586`)
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HTTP/1.0 support code is deprecated. It was disabled by default and couldn't be used together with HTTP/1.1. If you still need it, you should write your own download handler or copy the code from Scrapy. The deprecations include:
- scrapy.core.downloader.handlers.http10.HTTP10DownloadHandler
- scrapy.core.downloader.webclient.ScrapyHTTPClientFactory
- scrapy.core.downloader.webclient.ScrapyHTTPPageGetter
- Overriding scrapy.core.downloader.contextfactory.ScrapyClientContextFactory.getContext()
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The following modules and functions used only in tests are deprecated:
- the scrapy.utils.testproc module
- the scrapy.utils.testsite module
- scrapy.utils.test.assert_gcs_environ()
- scrapy.utils.test.get_ftp_content_and_delete()
- scrapy.utils.test.get_gcs_content_and_delete()
- scrapy.utils.test.mock_google_cloud_storage()
- scrapy.utils.test.skip_if_no_boto()
If you need to use them in your tests or code, you can copy the code from Scrapy. (:issue:`6696`)
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scrapy.utils.test.TestSpider is deprecated. If you need an empty spider class you can use :class:`scrapy.utils.spider.DefaultSpider` or create your own subclass of :class:`scrapy.Spider`. (:issue:`6678`)
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scrapy.downloadermiddlewares.ajaxcrawl.AjaxCrawlMiddleware is deprecated. It was disabled by default and isn't useful for most of the existing websites. (:issue:`6523`, :issue:`6651`, :issue:`6656`)
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scrapy.utils.url.escape_ajax() is deprecated. (:issue:`6523`, :issue:`6651`)
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scrapy.spiders.init.InitSpider is deprecated. If you find it useful, you can copy its code from Scrapy. (:issue:`6708`, :issue:`6714`)
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scrapy.utils.versions.scrapy_components_versions() is deprecated, use :func:`scrapy.utils.versions.get_versions` instead. (:issue:`6582`)
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BaseDupeFilter.log() is deprecated. It does nothing and shouldn't be called. (:issue:`4151`)
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Passing the spider argument to the following methods of :class:`~scrapy.core.scraper.Scraper` is deprecated:
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- close_spider()
- enqueue_scrape()
- handle_spider_error()
- handle_spider_output()
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New features
You can now yield the start requests and items of a spider from the :meth:`~scrapy.Spider.start` spider method and from the :meth:`~scrapy.spidermiddlewares.SpiderMiddleware.process_start` spider middleware method, both :term:`asynchronous generators <python:asynchronous generator>`.
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This makes it possible to use asynchronous code to generate those start requests and items, e.g. reading them from a queue service or database using an asynchronous client, without workarounds. (:issue:`456`, :issue:`3477`, :issue:`4467`, :issue:`5627`, :issue:`6729`)
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Start requests are now :ref:`scheduled <topics-scheduler>` as soon as possible.
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As a result, their :attr:`~scrapy.Request.priority` is now taken into account as soon as :setting:`CONCURRENT_REQUESTS` is reached. (:issue:`456`, :issue:`3477`, :issue:`4467`, :issue:`5627`, :issue:`6729`)
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:class:`Crawler.signals <scrapy.signalmanager.SignalManager>` has a new :meth:`~scrapy.signalmanager.SignalManager.wait_for` method. (:issue:`6729`)
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Added a new :signal:`scheduler_empty` signal. (:issue:`6729`)
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Added new settings: :setting:`SCHEDULER_START_DISK_QUEUE` and :setting:`SCHEDULER_START_MEMORY_QUEUE`. (:issue:`6729`)
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Added :class:`~scrapy.spidermiddlewares.start.StartSpiderMiddleware`, which sets :reqmeta:`is_start_request` to True on :ref:`start requests <start-requests>`. (:issue:`6729`)
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Exposed a new method of :class:`Crawler.engine <scrapy.core.engine.ExecutionEngine>`: :meth:`~scrapy.core.engine.ExecutionEngine.needs_backout`. (:issue:`6729`)
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Added the :reqmeta:`allow_offsite` request meta key that can be used instead of the more general :attr:`~scrapy.Request.dont_filter` request attribute to skip processing of the request by :class:`~scrapy.downloadermiddlewares.offsite.OffsiteMiddleware` (but not by other code that checks :attr:`~scrapy.Request.dont_filter`). (:issue:`3690`, :issue:`6151`, :issue:`6366`)
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Added an optional base class for spider middlewares, :class:`~scrapy.spidermiddlewares.base.BaseSpiderMiddleware`, which can be helpful for writing :ref:`universal spider middlewares <universal-spider-middleware>` without boilerplate and code duplication. The built-in spider middlewares now inherit from this class. (:issue:`6693`, :issue:`6777`)
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:ref:`Scrapy add-ons <topics-addons>` can now define a class method called update_pre_crawler_settings() to update :ref:`pre-crawler settings <pre-crawler-settings>`. (:issue:`6544`, :issue:`6568`)
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Added :ref:`helpers <priority-dict-helpers>` for modifying :ref:`component priority dictionary <component-priority-dictionaries>` settings. (:issue:`6614`)
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Responses that use an unknown/unsupported encoding now produce a warning. If Scrapy knows that installing an additional package (such as brotli) will allow decoding the response, that will be mentioned in the warning. (:issue:`4697`, :issue:`6618`)
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Added the spider_exceptions/count stat which tracks the total count of exceptions (tracked also by per-type spider_exceptions/* stats). (:issue:`6739`, :issue:`6740`)
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Added the :setting:`DEFAULT_DROPITEM_LOG_LEVEL` setting and the :attr:`scrapy.exceptions.DropItem.log_level` attribute that allow customizing the log level of the message that is logged when an item is dropped. (:issue:`6603`, :issue:`6608`)
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Added support for the -b, --cookie curl argument to :meth:`scrapy.Request.from_curl`. (:issue:`6684`)
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Added the :setting:`LOG_VERSIONS` setting that allows customizing the list of software whose versions are logged when the spider starts. (:issue:`6582`)
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Added the :setting:`WARN_ON_GENERATOR_RETURN_VALUE` setting that allows disabling run time analysis of callback code used to warn about incorrect return statements in generator-based callbacks. You may need to disable this setting if this analysis breaks on your callback code. (:issue:`6731`, :issue:`6738`)
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Improvements
Removed or postponed some calls of :func:`itemadapter.is_item` to increase performance. (:issue:`6719`)
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Improved the error message when running a scrapy command that requires a project (such as scrapy crawl) outside of a project directory. (:issue:`2349`, :issue:`3426`)
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Added an empty :setting:`ADDONS` setting to the settings.py template for new projects. (:issue:`6587`)
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Bug fixes
Yielding an item from :meth:`Spider.start <scrapy.Spider.start>` or from :meth:`SpiderMiddleware.process_start <scrapy.spidermiddlewares.SpiderMiddleware.process_start>` no longer delays the next iteration of starting requests and items by up to 5 seconds. (:issue:`6729`)
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Fixed calculation of items_per_minute and responses_per_minute stats. (:issue:`6599`)
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Fixed an error initializing :class:`scrapy.extensions.feedexport.GCSFeedStorage`. (:issue:`6617`, :issue:`6628`)
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Fixed an error running scrapy bench. (:issue:`6632`, :issue:`6633`)
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Fixed duplicated log messages about the reactor and the event loop. (:issue:`6636`, :issue:`6657`)
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Fixed resolving type annotations of SitemapSpider._parse_sitemap() at run time, required by tools such as scrapy-poet. (:issue:`6665`, :issue:`6671`)
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Calling :func:`scrapy.utils.reactor.is_asyncio_reactor_installed` without an installed reactor now raises an exception instead of installing a reactor. (:issue:`6732`, :issue:`6735`)
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Restored support for the x-gzip content encoding. (:issue:`6618`)
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Documentation
Documented the setting values set in the default project template. (:issue:`6762`, :issue:`6775`)
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Improved the docs about asynchronous iterable support in spider middlewares. (:issue:`6688`)
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Improved the :ref:`docs <coroutine-deferred-apis>` about using :class:`~twisted.internet.defer.Deferred`-based APIs in coroutine-based code and included a list of such APIs. (:issue:`6677`, :issue:`6734`, :issue:`6776`)
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Improved the :ref:`contribution docs <topics-contributing>`. (:issue:`6561`, :issue:`6575`)
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Removed the Splash recommendation from the :ref:`headless browser <topics-headless-browsing>` suggestion. We no longer recommend using Splash and recommend using other headless browser solutions instead. (:issue:`6642`, :issue:`6701`)
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Added the dark mode to the HTML documentation. (:issue:`6653`)
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Other documentation improvements and fixes. (:issue:`4151`, :issue:`6526`, :issue:`6620`, :issue:`6621`, :issue:`6622`, :issue:`6623`, :issue:`6624`, :issue:`6721`, :issue:`6723`, :issue:`6780`)
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Packaging
Switched from setup.py to pyproject.toml. (:issue:`6514`, :issue:`6547`)
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Switched the build backend from setuptools to hatchling. (:issue:`6771`)
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Quality assurance
Replaced most linters with ruff. (:issue:`6565`, :issue:`6576`, :issue:`6577`, :issue:`6581`, :issue:`6584`, :issue:`6595`, :issue:`6601`, :issue:`6631`)
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Improved accuracy and performance of collecting test coverage. (:issue:`6255`, :issue:`6610`)
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Fixed an error that prevented running tests from directories other than the top level source directory. (:issue:`6567`)
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Reduced the amount of mockserver calls in tests to improve the overall test run time. (:issue:`6637`, :issue:`6648`)
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Fixed tests that were running the same test code more than once. (:issue:`6646`, :issue:`6647`, :issue:`6650`)
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Refactored tests to use more pytest features instead of unittest ones where possible. (:issue:`6678`, :issue:`6680`, :issue:`6695`, :issue:`6699`, :issue:`6700`, :issue:`6702`, :issue:`6709`, :issue:`6710`, :issue:`6711`, :issue:`6712`, :issue:`6725`)
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Type hints improvements and fixes. (:issue:`6578`, :issue:`6579`, :issue:`6593`, :issue:`6605`, :issue:`6694`)
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CI and test improvements and fixes. (:issue:`5360`, :issue:`6271`, :issue:`6547`, :issue:`6560`, :issue:`6602`, :issue:`6607`, :issue:`6609`, :issue:`6613`, :issue:`6619`, :issue:`6626`, :issue:`6679`, :issue:`6703`, :issue:`6704`, :issue:`6716`, :issue:`6720`, :issue:`6722`, :issue:`6724`, :issue:`6741`, :issue:`6743`, :issue:`6766`, :issue:`6770`, :issue:`6772`, :issue:`6773`)
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Code cleanups. (:issue:`6600`, :issue:`6606`, :issue:`6635`, :issue:`6764`)
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Scrapy 2.12.0 (2024-11-18)
Highlights:
Dropped support for Python 3.8, added support for Python 3.13
scrapy.Spider.start_requests() can now yield items
Added :class:`~scrapy.http.JsonResponse`
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Added :setting:`CLOSESPIDER_PAGECOUNT_NO_ITEM`
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Modified requirements
Dropped support for Python 3.8. (:issue:`6466`, :issue:`6472`)
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Added support for Python 3.13. (:issue:`6166`)
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Minimum versions increased for these dependencies:
- Twisted: 18.9.0 → 21.7.0
- cryptography: 36.0.0 → 37.0.0
- pyOpenSSL: 21.0.0 → 22.0.0
- lxml: 4.4.1 → 4.6.0
Removed setuptools from the dependency list. (:issue:`6487`)
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Backward-incompatible changes
User-defined cookies for HTTPS requests will have the secure flag set to True unless it's set to False explicitly. This is important when these cookies are reused in HTTP requests, e.g. after a redirect to an HTTP URL. (:issue:`6357`)
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The Reppy-based robots.txt parser, scrapy.robotstxt.ReppyRobotParser, was removed, as it doesn't support Python 3.9+. (:issue:`5230`, :issue:`6099`, :issue:`6499`)
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The initialization API of :class:`scrapy.pipelines.media.MediaPipeline` and its subclasses was improved and it's possible that some previously working usage scenarios will no longer work. It can only affect you if you define custom subclasses of MediaPipeline or create instances of these pipelines via from_settings() or __init__() calls instead of from_crawler() calls.
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Previously, MediaPipeline.from_crawler() called the from_settings() method if it existed or the __init__() method otherwise, and then did some additional initialization using the crawler instance. If the from_settings() method existed (like in FilesPipeline) it called __init__() to create the instance. It wasn't possible to override from_crawler() without calling MediaPipeline.from_crawler() from it which, in turn, couldn't be called in some cases (including subclasses of FilesPipeline).
Now, in line with the general usage of from_crawler() and from_settings() and the deprecation of the latter the recommended initialization order is the following one:
- All __init__() methods should take a crawler argument. If they also take a settings argument they should ignore it, using crawler.settings instead. When they call __init__() of the base class they should pass the crawler argument to it too.
- A from_settings() method shouldn't be defined. Class-specific initialization code should go into either an overridden from_crawler() method or into __init__().
- It's now possible to override from_crawler() and it's not necessary to call MediaPipeline.from_crawler() in it if other recommendations were followed.
- If pipeline instances were created with from_settings() or __init__() calls (which wasn't supported even before, as it missed important initialization code), they should now be created with from_crawler() calls.
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The response_body argument of :meth:`ImagesPipeline.convert_image <scrapy.pipelines.images.ImagesPipeline.convert_image>` is now positional-only, as it was changed from optional to required. (:issue:`6500`)
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The convert argument of :func:`scrapy.utils.conf.build_component_list` is now positional-only, as the preceding argument (custom) was removed. (:issue:`6500`)
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The overwrite_output argument of :func:`scrapy.utils.conf.feed_process_params_from_cli` is now positional-only, as the preceding argument (output_format) was removed. (:issue:`6500`)
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Deprecation removals
Removed the scrapy.utils.request.request_fingerprint() function, deprecated in Scrapy 2.7.0. (:issue:`6212`, :issue:`6213`)
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Removed support for value "2.6" of setting REQUEST_FINGERPRINTER_IMPLEMENTATION, deprecated in Scrapy 2.7.0. (:issue:`6212`, :issue:`6213`)
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:class:`~scrapy.dupefilters.RFPDupeFilter` subclasses now require supporting the fingerprinter parameter in their __init__ method, introduced in Scrapy 2.7.0. (:issue:`6102`, :issue:`6113`)
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Removed the scrapy.downloadermiddlewares.decompression module, deprecated in Scrapy 2.7.0. (:issue:`6100`, :issue:`6113`)
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Removed the scrapy.utils.response.response_httprepr() function, deprecated in Scrapy 2.6.0. (:issue:`6111`, :issue:`6116`)
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Spiders with spider-level HTTP authentication, i.e. with the http_user or http_pass attributes, must now define http_auth_domain as well, which was introduced in Scrapy 2.5.1. (:issue:`6103`, :issue:`6113`)
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:ref:`Media pipelines <topics-media-pipeline>` methods file_path(), file_downloaded(), get_images(), image_downloaded(), media_downloaded(), media_to_download(), and thumb_path() must now support an item parameter, added in Scrapy 2.4.0. (:issue:`6107`, :issue:`6113`)
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The __init__() and from_crawler() methods of :ref:`feed storage backend classes <topics-feed-storage>` must now support the keyword-only feed_options parameter, introduced in Scrapy 2.4.0. (:issue:`6105`, :issue:`6113`)
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Removed the scrapy.loader.common and scrapy.loader.processors modules, deprecated in Scrapy 2.3.0. (:issue:`6106`, :issue:`6113`)
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Removed the scrapy.utils.misc.extract_regex() function, deprecated in Scrapy 2.3.0. (:issue:`6106`, :issue:`6113`)
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Removed the scrapy.http.JSONRequest class, replaced with JsonRequest in Scrapy 1.8.0. (:issue:`6110`, :issue:`6113`)
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scrapy.utils.log.logformatter_adapter no longer supports missing args, level, or msg parameters, and no longer supports a format parameter, all scenarios that were deprecated in Scrapy 1.0.0. (:issue:`6109`, :issue:`6116`)
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A custom class assigned to the :setting:`SPIDER_LOADER_CLASS` setting that does not implement the :class:`~scrapy.interfaces.ISpiderLoader` interface will now raise a :exc:`zope.interface.verify.DoesNotImplement` exception at run time. Non-compliant classes have been triggering a deprecation warning since Scrapy 1.0.0. (:issue:`6101`, :issue:`6113`)
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Removed the --output-format/-t command line option, deprecated in Scrapy 2.1.0. -O <URI>:<FORMAT> should be used instead. (:issue:`6500`)
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Running :meth:`~scrapy.crawler.Crawler.crawl` more than once on the same :class:`~scrapy.crawler.Crawler` instance, deprecated in Scrapy 2.11.0, now raises an exception. (:issue:`6500`)
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Subclassing :class:`~scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware` without support for the crawler argument in __init__() and without a custom from_crawler() method, deprecated in Scrapy 2.5.0, is no longer allowed. (:issue:`6500`)
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Removed the EXCEPTIONS_TO_RETRY attribute of :class:`~scrapy.downloadermiddlewares.retry.RetryMiddleware`, deprecated in Scrapy 2.10.0. (:issue:`6500`)
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Removed support for :ref:`S3 feed exports <topics-feed-storage-s3>` without the boto3 package installed, deprecated in Scrapy 2.10.0. (:issue:`6500`)
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Removed the scrapy.extensions.feedexport._FeedSlot class, deprecated in Scrapy 2.10.0. (:issue:`6500`)
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Removed the scrapy.pipelines.images.NoimagesDrop exception, deprecated in Scrapy 2.8.0. (:issue:`6500`)
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The response_body argument of :meth:`ImagesPipeline.convert_image <scrapy.pipelines.images.ImagesPipeline.convert_image>` is now required, not passing it was deprecated in Scrapy 2.8.0. (:issue:`6500`)
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Removed the custom argument of :func:`scrapy.utils.conf.build_component_list`, deprecated in Scrapy 2.10.0. (:issue:`6500`)
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Removed the scrapy.utils.reactor.get_asyncio_event_loop_policy() function, deprecated in Scrapy 2.9.0. Use :func:`asyncio.get_event_loop` and related standard library functions instead. (:issue:`6500`)
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Deprecations
The from_settings() methods of the :ref:`Scrapy components <topics-components>` that have them are now deprecated. from_crawler() should now be used instead. Affected components:
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:class:`scrapy.dupefilters.RFPDupeFilter`
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:class:`scrapy.mail.MailSender`
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:class:`scrapy.middleware.MiddlewareManager`
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:class:`scrapy.core.downloader.contextfactory.ScrapyClientContextFactory`
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:class:`scrapy.pipelines.files.FilesPipeline`
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:class:`scrapy.pipelines.images.ImagesPipeline`
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:class:`scrapy.spidermiddlewares.urllength.UrlLengthMiddleware`
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It's now deprecated to have a from_settings() method but no from_crawler() method in 3rd-party :ref:`Scrapy components <topics-components>`. You can define a simple from_crawler() method that calls cls.from_settings(crawler.settings) to fix this if you don't want to refactor the code. Note that if you have a from_crawler() method Scrapy will not call the from_settings() method so the latter can be removed. (:issue:`6540`)
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The initialization API of :class:`scrapy.pipelines.media.MediaPipeline` and its subclasses was improved and some old usage scenarios are now deprecated (see also the "Backward-incompatible changes" section). Specifically:
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- It's deprecated to define an __init__() method that doesn't take a crawler argument.
- It's deprecated to call an __init__() method without passing a crawler argument. If it's passed, it's also deprecated to pass a settings argument, which will be ignored anyway.
- Calling from_settings() is deprecated, use from_crawler() instead.
- Overriding from_settings() is deprecated, override from_crawler() instead.
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The REQUEST_FINGERPRINTER_IMPLEMENTATION setting is now deprecated. (:issue:`6212`, :issue:`6213`)
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The scrapy.utils.misc.create_instance() function is now deprecated, use :func:`scrapy.utils.misc.build_from_crawler` instead. (:issue:`5523`, :issue:`5884`, :issue:`6162`, :issue:`6169`, :issue:`6540`)
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scrapy.core.downloader.Downloader._get_slot_key() is deprecated, use :meth:`scrapy.core.downloader.Downloader.get_slot_key` instead. (:issue:`6340`, :issue:`6352`)
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scrapy.utils.defer.process_chain_both() is now deprecated. (:issue:`6397`)
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scrapy.twisted_version is now deprecated, you should instead use :attr:`twisted.version` directly (but note that it's an incremental.Version object, not a tuple). (:issue:`6509`, :issue:`6512`)
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scrapy.utils.python.flatten() and scrapy.utils.python.iflatten() are now deprecated. (:issue:`6517`, :issue:`6519`)
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scrapy.utils.python.equal_attributes() is now deprecated. (:issue:`6517`, :issue:`6519`)
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scrapy.utils.request.request_authenticate() is now deprecated, you should instead just set the Authorization header directly. (:issue:`6517`, :issue:`6519`)
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scrapy.utils.serialize.ScrapyJSONDecoder is now deprecated, it didn't contain any code since Scrapy 1.0.0. (:issue:`6517`, :issue:`6519`)
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scrapy.utils.test.assert_samelines() is now deprecated. (:issue:`6517`, :issue:`6519`)
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scrapy.extensions.feedexport.build_storage() is now deprecated. You can instead call the builder callable directly. (:issue:`6540`)
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New features
scrapy.Spider.start_requests() can now yield items. (:issue:`5289`, :issue:`6417`)
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Note
Some spider middlewares may need to be updated for Scrapy 2.12 support before you can use them in combination with the ability to yield items from start_requests().
Added a new :class:`~scrapy.http.Response` subclass, :class:`~scrapy.http.JsonResponse`, for responses with a JSON MIME type. (:issue:`6069`, :issue:`6171`, :issue:`6174`)
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The :class:`~scrapy.extensions.logstats.LogStats` extension now adds items_per_minute and responses_per_minute to the :ref:`stats <topics-stats>` when the spider closes. (:issue:`4110`, :issue:`4111`)
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Added :setting:`CLOSESPIDER_PAGECOUNT_NO_ITEM` which allows closing the spider if no items were scraped in a set amount of time. (:issue:`6434`)
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User-defined cookies can now include the secure field. (:issue:`6357`)
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Added component getters to :class:`~scrapy.crawler.Crawler`: :meth:`~scrapy.crawler.Crawler.get_addon`, :meth:`~scrapy.crawler.Crawler.get_downloader_middleware`, :meth:`~scrapy.crawler.Crawler.get_extension`, :meth:`~scrapy.crawler.Crawler.get_item_pipeline`, :meth:`~scrapy.crawler.Crawler.get_spider_middleware`. (:issue:`6181`)
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Slot delay updates by the :ref:`AutoThrottle extension <topics-autothrottle>` based on response latencies can now be disabled for specific requests via the :reqmeta:`autothrottle_dont_adjust_delay` meta key. (:issue:`6246`, :issue:`6527`)
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If :setting:`SPIDER_LOADER_WARN_ONLY` is set to True, :class:`~scrapy.spiderloader.SpiderLoader` does not raise :exc:`SyntaxError` but emits a warning instead. (:issue:`6483`, :issue:`6484`)
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Added support for multiple-compressed responses (ones with several encodings in the Content-Encoding header). (:issue:`5143`, :issue:`5964`, :issue:`6063`)
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Added support for multiple standard values in :setting:`REFERRER_POLICY`. (:issue:`6381`)
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Added support for brotlicffi (previously named brotlipy). brotli is still recommended but only brotlicffi works on PyPy. (:issue:`6263`, :issue:`6269`)
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Added :class:`~scrapy.contracts.default.MetadataContract` that sets the request meta. (:issue:`6468`, :issue:`6469`)
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Improvements
Extended the list of file extensions that :class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` ignores by default. (:issue:`6074`, :issue:`6125`)
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:func:`scrapy.utils.httpobj.urlparse_cached` is now used in more places instead of :func:`urllib.parse.urlparse`. (:issue:`6228`, :issue:`6229`)
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Bug fixes
:class:`~scrapy.pipelines.media.MediaPipeline` is now an abstract class and its methods that were expected to be overridden in subclasses are now abstract methods. (:issue:`6365`, :issue:`6368`)
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Fixed handling of invalid @-prefixed lines in contract extraction. (:issue:`6383`, :issue:`6388`)
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Importing scrapy.extensions.telnet no longer installs the default reactor. (:issue:`6432`)
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Reduced log verbosity for dropped requests that was increased in 2.11.2. (:issue:`6433`, :issue:`6475`)
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Documentation
Added SECURITY.md that documents the security policy. (:issue:`5364`, :issue:`6051`)
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Example code for :ref:`running Scrapy from a script <run-from-script>` no longer imports twisted.internet.reactor at the top level, which caused problems with non-default reactors when this code was used unmodified. (:issue:`6361`, :issue:`6374`)
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Documented the :class:`~scrapy.extensions.spiderstate.SpiderState` extension. (:issue:`6278`, :issue:`6522`)
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Other documentation improvements and fixes. (:issue:`5920`, :issue:`6094`, :issue:`6177`, :issue:`6200`, :issue:`6207`, :issue:`6216`, :issue:`6223`, :issue:`6317`, :issue:`6328`, :issue:`6389`, :issue:`6394`, :issue:`6402`, :issue:`6411`, :issue:`6427`, :issue:`6429`, :issue:`6440`, :issue:`6448`, :issue:`6449`, :issue:`6462`, :issue:`6497`, :issue:`6506`, :issue:`6507`, :issue:`6524`)
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Quality assurance
Added py.typed, in line with PEP 561. (:issue:`6058`, :issue:`6059`)
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Fully covered the code with type hints (except for the most complicated parts, mostly related to twisted.web.http and other Twisted parts without type hints). (:issue:`5989`, :issue:`6097`, :issue:`6127`, :issue:`6129`, :issue:`6130`, :issue:`6133`, :issue:`6143`, :issue:`6191`, :issue:`6268`, :issue:`6274`, :issue:`6275`, :issue:`6276`, :issue:`6279`, :issue:`6325`, :issue:`6326`, :issue:`6333`, :issue:`6335`, :issue:`6336`, :issue:`6337`, :issue:`6341`, :issue:`6353`, :issue:`6356`, :issue:`6370`, :issue:`6371`, :issue:`6384`, :issue:`6385`, :issue:`6387`, :issue:`6391`, :issue:`6395`, :issue:`6414`, :issue:`6422`, :issue:`6460`, :issue:`6466`, :issue:`6472`, :issue:`6494`, :issue:`6498`, :issue:`6516`)
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Improved Bandit checks. (:issue:`6260`, :issue:`6264`, :issue:`6265`)
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Added pyupgrade to the pre-commit configuration. (:issue:`6392`)
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Added flake8-bugbear, flake8-comprehensions, flake8-debugger, flake8-docstrings, flake8-string-format and flake8-type-checking to the pre-commit configuration. (:issue:`6406`, :issue:`6413`)
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CI and test improvements and fixes. (:issue:`5285`, :issue:`5454`, :issue:`5997`, :issue:`6078`, :issue:`6084`, :issue:`6087`, :issue:`6132`, :issue:`6153`, :issue:`6154`, :issue:`6201`, :issue:`6231`, :issue:`6232`, :issue:`6235`, :issue:`6236`, :issue:`6242`, :issue:`6245`, :issue:`6253`, :issue:`6258`, :issue:`6259`, :issue:`6270`, :issue:`6272`, :issue:`6286`, :issue:`6290`, :issue:`6296` :issue:`6367`, :issue:`6372`, :issue:`6403`, :issue:`6416`, :issue:`6435`, :issue:`6489`, :issue:`6501`, :issue:`6504`, :issue:`6511`, :issue:`6543`, :issue:`6545`)
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Code cleanups. (:issue:`6196`, :issue:`6197`, :issue:`6198`, :issue:`6199`, :issue:`6254`, :issue:`6257`, :issue:`6285`, :issue:`6305`, :issue:`6343`, :issue:`6349`, :issue:`6386`, :issue:`6415`, :issue:`6463`, :issue:`6470`, :issue:`6499`, :issue:`6505`, :issue:`6510`, :issue:`6531`, :issue:`6542`)
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Other
Issue tracker improvements. (:issue:`6066`)
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Scrapy 2.11.2 (2024-05-14)
Security bug fixes
Redirects to non-HTTP protocols are no longer followed. Please, see the 23j4-mw76-5v7h security advisory for more information. (:issue:`457`)
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The Authorization header is now dropped on redirects to a different scheme (http:// or https://) or port, even if the domain is the same. Please, see the 4qqq-9vqf-3h3f security advisory for more information.
When using system proxy settings that are different for http:// and https://, redirects to a different URL scheme will now also trigger the corresponding change in proxy settings for the redirected request. Please, see the jm3v-qxmh-hxwv security advisory for more information. (:issue:`767`)
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:attr:`Spider.allowed_domains <scrapy.Spider.allowed_domains>` is now enforced for all requests, and not only requests from spider callbacks. (:issue:`1042`, :issue:`2241`, :issue:`6358`)
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:func:`~scrapy.utils.iterators.xmliter_lxml` no longer resolves XML entities. (:issue:`6265`)
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defusedxml is now used to make :class:`scrapy.http.request.rpc.XmlRpcRequest` more secure. (:issue:`6250`, :issue:`6251`)
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Deprecations
scrapy.spidermiddlewares.offsite.OffsiteMiddleware (a spider middleware) is now deprecated and not enabled by default. The new downloader middleware with the same functionality, :class:`scrapy.downloadermiddlewares.offsite.OffsiteMiddleware`, is enabled instead. (:issue:`2241`, :issue:`6358`)
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Bug fixes
Restored support for brotlipy, which had been dropped in Scrapy 2.11.1 in favor of brotli. (:issue:`6261`)
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Note
brotlipy is deprecated, both in Scrapy and upstream. Use brotli instead if you can.
Make :setting:`METAREFRESH_IGNORE_TAGS` ["noscript"] by default. This prevents :class:`~scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware` from following redirects that would not be followed by web browsers with JavaScript enabled. (:issue:`6342`, :issue:`6347`)
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During :ref:`feed export <topics-feed-exports>`, do not close the underlying file from :ref:`built-in post-processing plugins <builtin-plugins>`. (:issue:`5932`, :issue:`6178`, :issue:`6239`)
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:class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` now properly applies the unique and canonicalize parameters. (:issue:`3273`, :issue:`6221`)
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Do not initialize the scheduler disk queue if :setting:`JOBDIR` is an empty string. (:issue:`6121`, :issue:`6124`)
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Fix :attr:`Spider.logger <scrapy.Spider.logger>` not logging custom extra information. (:issue:`6323`, :issue:`6324`)
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robots.txt files with a non-UTF-8 encoding no longer prevent parsing the UTF-8-compatible (e.g. ASCII) parts of the document. (:issue:`6292`, :issue:`6298`)
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:meth:`scrapy.http.cookies.WrappedRequest.get_header` no longer raises an exception if default is None. (:issue:`6308`, :issue:`6310`)
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:class:`~scrapy.Selector` now uses :func:`scrapy.utils.response.get_base_url` to determine the base URL of a given :class:`~scrapy.http.Response`. (:issue:`6265`)
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The :meth:`media_to_download` method of :ref:`media pipelines <topics-media-pipeline>` now logs exceptions before stripping them. (:issue:`5067`, :issue:`5068`)
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When passing a callback to the :command:`parse` command, build the callback callable with the right signature. (:issue:`6182`)
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Documentation
Add a FAQ entry about :ref:`creating blank requests <faq-blank-request>`. (:issue:`6203`, :issue:`6208`)
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Document that :attr:`scrapy.Selector.type` can be "json". (:issue:`6328`, :issue:`6334`)
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Quality assurance
Make builds reproducible. (:issue:`5019`, :issue:`6322`)
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Packaging and test fixes. (:issue:`6286`, :issue:`6290`, :issue:`6312`, :issue:`6316`, :issue:`6344`)
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Scrapy 2.11.1 (2024-02-14)
Highlights:
- Security bug fixes.
- Support for Twisted >= 23.8.0.
- Documentation improvements.
Security bug fixes
Addressed ReDoS vulnerabilities:
scrapy.utils.iterators.xmliter is now deprecated in favor of :func:`~scrapy.utils.iterators.xmliter_lxml`, which :class:`~scrapy.spiders.XMLFeedSpider` now uses.
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To minimize the impact of this change on existing code, :func:`~scrapy.utils.iterators.xmliter_lxml` now supports indicating the node namespace with a prefix in the node name, and big files with highly nested trees when using libxml2 2.7+.
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Fixed regular expressions in the implementation of the :func:`~scrapy.utils.response.open_in_browser` function.
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Please, see the cc65-xxvf-f7r9 security advisory for more information.
:setting:`DOWNLOAD_MAXSIZE` and :setting:`DOWNLOAD_WARNSIZE` now also apply to the decompressed response body. Please, see the 7j7m-v7m3-jqm7 security advisory for more information.
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Also in relation with the 7j7m-v7m3-jqm7 security advisory, the deprecated scrapy.downloadermiddlewares.decompression module has been removed.
The Authorization header is now dropped on redirects to a different domain. Please, see the cw9j-q3vf-hrrv security advisory for more information.
Modified requirements
The Twisted dependency is no longer restricted to < 23.8.0. (:issue:`6024`, :issue:`6064`, :issue:`6142`)
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Bug fixes
The OS signal handling code was refactored to no longer use private Twisted functions. (:issue:`6024`, :issue:`6064`, :issue:`6112`)
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Documentation
Improved documentation for :class:`~scrapy.crawler.Crawler` initialization changes made in the 2.11.0 release. (:issue:`6057`, :issue:`6147`)
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Extended documentation for :attr:`.Request.meta`. (:issue:`5565`)
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Fixed the :reqmeta:`dont_merge_cookies` documentation. (:issue:`5936`, :issue:`6077`)
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Added a link to Zyte's export guides to the :ref:`feed exports <topics-feed-exports>` documentation. (:issue:`6183`)
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Added a missing note about backward-incompatible changes in :class:`~scrapy.exporters.PythonItemExporter` to the 2.11.0 release notes. (:issue:`6060`, :issue:`6081`)
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Added a missing note about removing the deprecated scrapy.utils.boto.is_botocore() function to the 2.8.0 release notes. (:issue:`6056`, :issue:`6061`)
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Other documentation improvements. (:issue:`6128`, :issue:`6144`, :issue:`6163`, :issue:`6190`, :issue:`6192`)
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Quality assurance
Added Python 3.12 to the CI configuration, re-enabled tests that were disabled when the pre-release support was added. (:issue:`5985`, :issue:`6083`, :issue:`6098`)
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Fixed a test issue on PyPy 7.3.14. (:issue:`6204`, :issue:`6205`)
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Scrapy 2.11.0 (2023-09-18)
Highlights:
Spiders can now modify :ref:`settings <topics-settings>` in their :meth:`~scrapy.Spider.from_crawler` methods, e.g. based on :ref:`spider arguments <spiderargs>`.
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Periodic logging of stats.
Backward-incompatible changes
Most of the initialization of :class:`scrapy.crawler.Crawler` instances is now done in :meth:`~scrapy.crawler.Crawler.crawl`, so the state of instances before that method is called is now different compared to older Scrapy versions. We do not recommend using the :class:`~scrapy.crawler.Crawler` instances before :meth:`~scrapy.crawler.Crawler.crawl` is called. (:issue:`6038`)
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:meth:`scrapy.Spider.from_crawler` is now called before the initialization of various components previously initialized in :meth:`scrapy.crawler.Crawler.__init__` and before the settings are finalized and frozen. This change was needed to allow changing the settings in :meth:`scrapy.Spider.from_crawler`. If you want to access the final setting values and the initialized :class:`~scrapy.crawler.Crawler` attributes in the spider code as early as possible you can do this in scrapy.Spider.start_requests() or in a handler of the :signal:`engine_started` signal. (:issue:`6038`)
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The :meth:`TextResponse.json <scrapy.http.TextResponse.json>` method now requires the response to be in a valid JSON encoding (UTF-8, UTF-16, or UTF-32). If you need to deal with JSON documents in an invalid encoding, use json.loads(response.text) instead. (:issue:`6016`)
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:class:`~scrapy.exporters.PythonItemExporter` used the binary output by default but it no longer does. (:issue:`6006`, :issue:`6007`)
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Deprecation removals
Removed the binary export mode of :class:`~scrapy.exporters.PythonItemExporter`, deprecated in Scrapy 1.1.0. (:issue:`6006`, :issue:`6007`)
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Note
If you are using this Scrapy version on Scrapy Cloud with a stack that includes an older Scrapy version and get a "TypeError: Unexpected options: binary" error, you may need to add scrapinghub-entrypoint-scrapy >= 0.14.1 to your project requirements or switch to a stack that includes Scrapy 2.11.
Removed the CrawlerRunner.spiders attribute, deprecated in Scrapy 1.0.0, use :attr:`CrawlerRunner.spider_loader <scrapy.crawler.CrawlerRunner.spider_loader>` instead. (:issue:`6010`)
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The :func:`scrapy.utils.response.response_httprepr` function, deprecated in Scrapy 2.6.0, has now been removed. (:issue:`6111`)
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Deprecations
Running :meth:`~scrapy.crawler.Crawler.crawl` more than once on the same :class:`scrapy.crawler.Crawler` instance is now deprecated. (:issue:`1587`, :issue:`6040`)
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New features
Spiders can now modify settings in their :meth:`~scrapy.Spider.from_crawler` method, e.g. based on :ref:`spider arguments <spiderargs>`. (:issue:`1305`, :issue:`1580`, :issue:`2392`, :issue:`3663`, :issue:`6038`)
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Added the :class:`~scrapy.extensions.periodic_log.PeriodicLog` extension which can be enabled to log stats and/or their differences periodically. (:issue:`5926`)
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Optimized the memory usage in :meth:`TextResponse.json <scrapy.http.TextResponse.json>` by removing unnecessary body decoding. (:issue:`5968`, :issue:`6016`)
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Links to .webp files are now ignored by :ref:`link extractors <topics-link-extractors>`. (:issue:`6021`)
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Bug fixes
Fixed logging enabled add-ons. (:issue:`6036`)
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Fixed :class:`~scrapy.mail.MailSender` producing invalid message bodies when the charset argument is passed to :meth:`~scrapy.mail.MailSender.send`. (:issue:`5096`, :issue:`5118`)
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Fixed an exception when accessing self.EXCEPTIONS_TO_RETRY from a subclass of :class:`~scrapy.downloadermiddlewares.retry.RetryMiddleware`. (:issue:`6049`, :issue:`6050`)
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:meth:`scrapy.settings.BaseSettings.getdictorlist`, used to parse :setting:`FEED_EXPORT_FIELDS`, now handles tuple values. (:issue:`6011`, :issue:`6013`)
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Calls to datetime.utcnow(), no longer recommended to be used, have been replaced with calls to datetime.now() with a timezone. (:issue:`6014`)
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Documentation
Updated a deprecated function call in a pipeline example. (:issue:`6008`, :issue:`6009`)
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Quality assurance
Extended typing hints. (:issue:`6003`, :issue:`6005`, :issue:`6031`, :issue:`6034`)
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Pinned brotli to 1.0.9 for the PyPy tests as 1.1.0 breaks them. (:issue:`6044`, :issue:`6045`)
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Other CI and pre-commit improvements. (:issue:`6002`, :issue:`6013`, :issue:`6046`)
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Scrapy 2.10.1 (2023-08-30)
Marked Twisted >= 23.8.0 as unsupported. (:issue:`6024`, :issue:`6026`)
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Unknown interpreted text role "issue".Scrapy 2.10.0 (2023-08-04)
Highlights:
- Added Python 3.12 support, dropped Python 3.7 support.
- The new add-ons framework simplifies configuring 3rd-party components that support it.
- Exceptions to retry can now be configured.
- Many fixes and improvements for feed exports.
Modified requirements
Dropped support for Python 3.7. (:issue:`5953`)
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Added support for the upcoming Python 3.12. (:issue:`5984`)
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Minimum versions increased for these dependencies:
- lxml: 4.3.0 → 4.4.1
- cryptography: 3.4.6 → 36.0.0
pkg_resources is no longer used. (:issue:`5956`, :issue:`5958`)
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boto3 is now recommended instead of botocore for exporting to S3. (:issue:`5833`).
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Backward-incompatible changes
The value of the :setting:`FEED_STORE_EMPTY` setting is now True instead of False. In earlier Scrapy versions empty files were created even when this setting was False (which was a bug that is now fixed), so the new default should keep the old behavior. (:issue:`872`, :issue:`5847`)
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Deprecation removals
When a function is assigned to the :setting:`FEED_URI_PARAMS` setting, returning None or modifying the params input parameter, deprecated in Scrapy 2.6, is no longer supported. (:issue:`5994`, :issue:`5996`)
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The scrapy.utils.reqser module, deprecated in Scrapy 2.6, is removed. (:issue:`5994`, :issue:`5996`)
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The scrapy.squeues classes PickleFifoDiskQueueNonRequest, PickleLifoDiskQueueNonRequest, MarshalFifoDiskQueueNonRequest, and MarshalLifoDiskQueueNonRequest, deprecated in Scrapy 2.6, are removed. (:issue:`5994`, :issue:`5996`)
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The property open_spiders and the methods has_capacity and schedule of :class:`scrapy.core.engine.ExecutionEngine`, deprecated in Scrapy 2.6, are removed. (:issue:`5994`, :issue:`5998`)
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Passing a spider argument to the :meth:`~scrapy.core.engine.ExecutionEngine.spider_is_idle`, :meth:`~scrapy.core.engine.ExecutionEngine.crawl` and :meth:`~scrapy.core.engine.ExecutionEngine.download` methods of :class:`scrapy.core.engine.ExecutionEngine`, deprecated in Scrapy 2.6, is no longer supported. (:issue:`5994`, :issue:`5998`)
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Deprecations
:class:`scrapy.utils.datatypes.CaselessDict` is deprecated, use :class:`scrapy.utils.datatypes.CaseInsensitiveDict` instead. (:issue:`5146`)
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Passing the custom argument to :func:`scrapy.utils.conf.build_component_list` is deprecated, it was used in the past to merge FOO and FOO_BASE setting values but now Scrapy uses :func:`scrapy.settings.BaseSettings.getwithbase` to do the same. Code that uses this argument and cannot be switched to getwithbase() can be switched to merging the values explicitly. (:issue:`5726`, :issue:`5923`)
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New features
Added support for :ref:`Scrapy add-ons <topics-addons>`. (:issue:`5950`)
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Added the :setting:`RETRY_EXCEPTIONS` setting that configures which exceptions will be retried by :class:`~scrapy.downloadermiddlewares.retry.RetryMiddleware`. (:issue:`2701`, :issue:`5929`)
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Added the possiiblity to close the spider if no items were produced in the specified time, configured by :setting:`CLOSESPIDER_TIMEOUT_NO_ITEM`. (:issue:`5979`)
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Added support for the :setting:`AWS_REGION_NAME` setting to feed exports. (:issue:`5980`)
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Added support for using :class:`pathlib.Path` objects that refer to absolute Windows paths in the :setting:`FEEDS` setting. (:issue:`5939`)
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Bug fixes
Fixed creating empty feeds even with FEED_STORE_EMPTY=False. (:issue:`872`, :issue:`5847`)
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Fixed using absolute Windows paths when specifying output files. (:issue:`5969`, :issue:`5971`)
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Fixed problems with uploading large files to S3 by switching to multipart uploads (requires boto3). (:issue:`960`, :issue:`5735`, :issue:`5833`)
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Fixed the JSON exporter writing extra commas when some exceptions occur. (:issue:`3090`, :issue:`5952`)
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Fixed the "read of closed file" error in the CSV exporter. (:issue:`5043`, :issue:`5705`)
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Fixed an error when a component added by the class object throws :exc:`~scrapy.exceptions.NotConfigured` with a message. (:issue:`5950`, :issue:`5992`)
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Added the missing :meth:`scrapy.settings.BaseSettings.pop` method. (:issue:`5959`, :issue:`5960`, :issue:`5963`)
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Added :class:`~scrapy.utils.datatypes.CaseInsensitiveDict` as a replacement for :class:`~scrapy.utils.datatypes.CaselessDict` that fixes some API inconsistencies. (:issue:`5146`)
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Documentation
Documented :meth:`scrapy.Spider.update_settings`. (:issue:`5745`, :issue:`5846`)
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Documented possible problems with early Twisted reactor installation and their solutions. (:issue:`5981`, :issue:`6000`)
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Added examples of making additional requests in callbacks. (:issue:`5927`)
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Improved the feed export docs. (:issue:`5579`, :issue:`5931`)
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Clarified the docs about request objects on redirection. (:issue:`5707`, :issue:`5937`)
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Quality assurance
Added support for running tests against the installed Scrapy version. (:issue:`4914`, :issue:`5949`)
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Extended typing hints. (:issue:`5925`, :issue:`5977`)
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Fixed the test_utils_asyncio.AsyncioTest.test_set_asyncio_event_loop test. (:issue:`5951`)
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Fixed the test_feedexport.BatchDeliveriesTest.test_batch_path_differ test on Windows. (:issue:`5847`)
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Enabled CI runs for Python 3.11 on Windows. (:issue:`5999`)
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Simplified skipping tests that depend on uvloop. (:issue:`5984`)
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Fixed the extra-deps-pinned tox env. (:issue:`5948`)
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Implemented cleanups. (:issue:`5965`, :issue:`5986`)
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Scrapy 2.9.0 (2023-05-08)
Highlights:
- Per-domain download settings.
- Compatibility with new cryptography and new parsel.
- JMESPath selectors from the new parsel.
- Bug fixes.
Deprecations
:class:`scrapy.extensions.feedexport._FeedSlot` is renamed to :class:`scrapy.extensions.feedexport.FeedSlot` and the old name is deprecated. (:issue:`5876`)
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New features
Settings corresponding to :setting:`DOWNLOAD_DELAY`, :setting:`CONCURRENT_REQUESTS_PER_DOMAIN` and :setting:`RANDOMIZE_DOWNLOAD_DELAY` can now be set on a per-domain basis via the new :setting:`DOWNLOAD_SLOTS` setting. (:issue:`5328`)
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Added :meth:`.TextResponse.jmespath`, a shortcut for JMESPath selectors available since parsel 1.8.1. (:issue:`5894`, :issue:`5915`)
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Added :signal:`feed_slot_closed` and :signal:`feed_exporter_closed` signals. (:issue:`5876`)
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Added :func:`scrapy.utils.request.request_to_curl`, a function to produce a curl command from a :class:`~scrapy.Request` object. (:issue:`5892`)
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Values of :setting:`FILES_STORE` and :setting:`IMAGES_STORE` can now be :class:`pathlib.Path` instances. (:issue:`5801`)
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Bug fixes
Fixed a warning with Parsel 1.8.1+. (:issue:`5903`, :issue:`5918`)
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Fixed an error when using feed postprocessing with S3 storage. (:issue:`5500`, :issue:`5581`)
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Added the missing :meth:`scrapy.settings.BaseSettings.setdefault` method. (:issue:`5811`, :issue:`5821`)
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Fixed an error when using cryptography 40.0.0+ and :setting:`DOWNLOADER_CLIENT_TLS_VERBOSE_LOGGING` is enabled. (:issue:`5857`, :issue:`5858`)
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The checksums returned by :class:`~scrapy.pipelines.files.FilesPipeline` for files on Google Cloud Storage are no longer Base64-encoded. (:issue:`5874`, :issue:`5891`)
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:func:`scrapy.utils.request.request_from_curl` now supports $-prefixed string values for the curl --data-raw argument, which are produced by browsers for data that includes certain symbols. (:issue:`5899`, :issue:`5901`)
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The :command:`parse` command now also works with async generator callbacks. (:issue:`5819`, :issue:`5824`)
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The :command:`genspider` command now properly works with HTTPS URLs. (:issue:`3553`, :issue:`5808`)
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Improved handling of asyncio loops. (:issue:`5831`, :issue:`5832`)
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:class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` now skips certain malformed URLs instead of raising an exception. (:issue:`5881`)
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:func:`scrapy.utils.python.get_func_args` now supports more types of callables. (:issue:`5872`, :issue:`5885`)
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Fixed an error when processing non-UTF8 values of Content-Type headers. (:issue:`5914`, :issue:`5917`)
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Fixed an error breaking user handling of send failures in :meth:`scrapy.mail.MailSender.send`. (:issue:`1611`, :issue:`5880`)
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Documentation
Expanded contributing docs. (:issue:`5109`, :issue:`5851`)
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Added blacken-docs to pre-commit and reformatted the docs with it. (:issue:`5813`, :issue:`5816`)
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Fixed a JS issue. (:issue:`5875`, :issue:`5877`)
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Fixed make htmlview. (:issue:`5878`, :issue:`5879`)
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Fixed typos and other small errors. (:issue:`5827`, :issue:`5839`, :issue:`5883`, :issue:`5890`, :issue:`5895`, :issue:`5904`)
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Quality assurance
Extended typing hints. (:issue:`5805`, :issue:`5889`, :issue:`5896`)
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Tests for most of the examples in the docs are now run as a part of CI, found problems were fixed. (:issue:`5816`, :issue:`5826`, :issue:`5919`)
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Removed usage of deprecated Python classes. (:issue:`5849`)
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Silenced include-ignored warnings from coverage. (:issue:`5820`)
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Fixed a random failure of the test_feedexport.test_batch_path_differ test. (:issue:`5855`, :issue:`5898`)
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Updated docstrings to match output produced by parsel 1.8.1 so that they don't cause test failures. (:issue:`5902`, :issue:`5919`)
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Other CI and pre-commit improvements. (:issue:`5802`, :issue:`5823`, :issue:`5908`)
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Scrapy 2.8.0 (2023-02-02)
This is a maintenance release, with minor features, bug fixes, and cleanups.
Deprecation removals
The scrapy.utils.gz.read1 function, deprecated in Scrapy 2.0, has now been removed. Use the :meth:`~io.BufferedIOBase.read1` method of :class:`~gzip.GzipFile` instead. (:issue:`5719`)
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The scrapy.utils.python.to_native_str function, deprecated in Scrapy 2.0, has now been removed. Use :func:`scrapy.utils.python.to_unicode` instead. (:issue:`5719`)
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The scrapy.utils.python.MutableChain.next method, deprecated in Scrapy 2.0, has now been removed. Use :meth:`~scrapy.utils.python.MutableChain.__next__` instead. (:issue:`5719`)
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The scrapy.linkextractors.FilteringLinkExtractor class, deprecated in Scrapy 2.0, has now been removed. Use :class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` instead. (:issue:`5720`)
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Support for using environment variables prefixed with SCRAPY_ to override settings, deprecated in Scrapy 2.0, has now been removed. (:issue:`5724`)
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Support for the noconnect query string argument in proxy URLs, deprecated in Scrapy 2.0, has now been removed. We expect proxies that used to need it to work fine without it. (:issue:`5731`)
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The scrapy.utils.python.retry_on_eintr function, deprecated in Scrapy 2.3, has now been removed. (:issue:`5719`)
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The scrapy.utils.python.WeakKeyCache class, deprecated in Scrapy 2.4, has now been removed. (:issue:`5719`)
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The scrapy.utils.boto.is_botocore() function, deprecated in Scrapy 2.4, has now been removed. (:issue:`5719`)
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Deprecations
:exc:`scrapy.pipelines.images.NoimagesDrop` is now deprecated. (:issue:`5368`, :issue:`5489`)
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:meth:`ImagesPipeline.convert_image <scrapy.pipelines.images.ImagesPipeline.convert_image>` must now accept a response_body parameter. (:issue:`3055`, :issue:`3689`, :issue:`4753`)
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New features
Applied black coding style to files generated with the :command:`genspider` and :command:`startproject` commands. (:issue:`5809`, :issue:`5814`)
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:setting:`FEED_EXPORT_ENCODING` is now set to "utf-8" in the settings.py file that the :command:`startproject` command generates. With this value, JSON exports won’t force the use of escape sequences for non-ASCII characters. (:issue:`5797`, :issue:`5800`)
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The :class:`~scrapy.extensions.memusage.MemoryUsage` extension now logs the peak memory usage during checks, and the binary unit MiB is now used to avoid confusion. (:issue:`5717`, :issue:`5722`, :issue:`5727`)
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The callback parameter of :class:`~scrapy.Request` can now be set to :func:`scrapy.http.request.NO_CALLBACK`, to distinguish it from None, as the latter indicates that the default spider callback (:meth:`~scrapy.Spider.parse`) is to be used. (:issue:`5798`)
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Bug fixes
Enabled unsafe legacy SSL renegotiation to fix access to some outdated websites. (:issue:`5491`, :issue:`5790`)
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Fixed STARTTLS-based email delivery not working with Twisted 21.2.0 and better. (:issue:`5386`, :issue:`5406`)
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Fixed the :meth:`finish_exporting` method of :ref:`item exporters <topics-exporters>` not being called for empty files. (:issue:`5537`, :issue:`5758`)
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Fixed HTTP/2 responses getting only the last value for a header when multiple headers with the same name are received. (:issue:`5777`)
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Fixed an exception raised by the :command:`shell` command on some cases when :ref:`using asyncio <using-asyncio>`. (:issue:`5740`, :issue:`5742`, :issue:`5748`, :issue:`5759`, :issue:`5760`, :issue:`5771`)
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When using :class:`~scrapy.spiders.CrawlSpider`, callback keyword arguments (cb_kwargs) added to a request in the process_request callback of a :class:`~scrapy.spiders.Rule` will no longer be ignored. (:issue:`5699`)
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The :ref:`images pipeline <images-pipeline>` no longer re-encodes JPEG files. (:issue:`3055`, :issue:`3689`, :issue:`4753`)
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Fixed the handling of transparent WebP images by the :ref:`images pipeline <images-pipeline>`. (:issue:`3072`, :issue:`5766`, :issue:`5767`)
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:func:`scrapy.shell.inspect_response` no longer inhibits SIGINT (Ctrl+C). (:issue:`2918`)
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:class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` with unique=False no longer filters out links that have identical URL and text. (:issue:`3798`, :issue:`3799`, :issue:`4695`, :issue:`5458`)
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:class:`~scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware` now ignores URL protocols that do not support robots.txt (data://, file://). (:issue:`5807`)
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Silenced the filelock debug log messages introduced in Scrapy 2.6. (:issue:`5753`, :issue:`5754`)
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Fixed the output of scrapy -h showing an unintended **commands** line. (:issue:`5709`, :issue:`5711`, :issue:`5712`)
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Made the active project indication in the output of :ref:`commands <topics-commands>` more clear. (:issue:`5715`)
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Documentation
Documented how to :ref:`debug spiders from Visual Studio Code <debug-vscode>`. (:issue:`5721`)
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Documented how :setting:`DOWNLOAD_DELAY` affects per-domain concurrency. (:issue:`5083`, :issue:`5540`)
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Improved consistency. (:issue:`5761`)
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Fixed typos. (:issue:`5714`, :issue:`5744`, :issue:`5764`)
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Quality assurance
Applied :ref:`black coding style <coding-style>`, sorted import statements, and introduced :ref:`pre-commit <scrapy-pre-commit>`. (:issue:`4654`, :issue:`4658`, :issue:`5734`, :issue:`5737`, :issue:`5806`, :issue:`5810`)
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Switched from :mod:`os.path` to :mod:`pathlib`. (:issue:`4916`, :issue:`4497`, :issue:`5682`)
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Addressed many issues reported by Pylint. (:issue:`5677`)
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Improved code readability. (:issue:`5736`)
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Improved package metadata. (:issue:`5768`)
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Removed direct invocations of setup.py. (:issue:`5774`, :issue:`5776`)
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Removed unnecessary :class:`~collections.OrderedDict` usages. (:issue:`5795`)
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Removed unnecessary __str__ definitions. (:issue:`5150`)
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Removed obsolete code and comments. (:issue:`5725`, :issue:`5729`, :issue:`5730`, :issue:`5732`)
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Fixed test and CI issues. (:issue:`5749`, :issue:`5750`, :issue:`5756`, :issue:`5762`, :issue:`5765`, :issue:`5780`, :issue:`5781`, :issue:`5782`, :issue:`5783`, :issue:`5785`, :issue:`5786`)
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Scrapy 2.7.1 (2022-11-02)
New features
Relaxed the restriction introduced in 2.6.2 so that the Proxy-Authorization header can again be set explicitly, as long as the proxy URL in the :reqmeta:`proxy` metadata has no other credentials, and for as long as that proxy URL remains the same; this restores compatibility with scrapy-zyte-smartproxy 2.1.0 and older (:issue:`5626`).
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Bug fixes
Using -O/--overwrite-output and -t/--output-format options together now produces an error instead of ignoring the former option (:issue:`5516`, :issue:`5605`).
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Replaced deprecated :mod:`asyncio` APIs that implicitly use the current event loop with code that explicitly requests a loop from the event loop policy (:issue:`5685`, :issue:`5689`).
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Fixed uses of deprecated Scrapy APIs in Scrapy itself (:issue:`5588`, :issue:`5589`).
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Fixed uses of a deprecated Pillow API (:issue:`5684`, :issue:`5692`).
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Improved code that checks if generators return values, so that it no longer fails on decorated methods and partial methods (:issue:`5323`, :issue:`5592`, :issue:`5599`, :issue:`5691`).
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Documentation
Upgraded the Code of Conduct to Contributor Covenant v2.1 (:issue:`5698`).
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Fixed typos (:issue:`5681`, :issue:`5694`).
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Quality assurance
Re-enabled some erroneously disabled flake8 checks (:issue:`5688`).
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Ignored harmless deprecation warnings from :mod:`typing` in tests (:issue:`5686`, :issue:`5697`).
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Modernized our CI configuration (:issue:`5695`, :issue:`5696`).
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Scrapy 2.7.0 (2022-10-17)
Highlights:
Added Python 3.11 support, dropped Python 3.6 support
Improved support for :ref:`asynchronous callbacks <topics-coroutines>`
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:ref:`Asyncio support <using-asyncio>` is enabled by default on new projects
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Output names of item fields can now be arbitrary strings
Centralized :ref:`request fingerprinting <request-fingerprints>` configuration is now possible
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Modified requirements
Python 3.7 or greater is now required; support for Python 3.6 has been dropped. Support for the upcoming Python 3.11 has been added.
The minimum required version of some dependencies has changed as well:
lxml: 3.5.0 → 4.3.0
Pillow (:ref:`images pipeline <images-pipeline>`): 4.0.0 → 7.1.0
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zope.interface: 5.0.0 → 5.1.0
(:issue:`5512`, :issue:`5514`, :issue:`5524`, :issue:`5563`, :issue:`5664`, :issue:`5670`, :issue:`5678`)
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:meth:`ImagesPipeline.thumb_path <scrapy.pipelines.images.ImagesPipeline.thumb_path>` must now accept an item parameter (:issue:`5504`, :issue:`5508`).
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The scrapy.downloadermiddlewares.decompression module is now deprecated (:issue:`5546`, :issue:`5547`).
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New features
The :meth:`~scrapy.spidermiddlewares.SpiderMiddleware.process_spider_output` method of :ref:`spider middlewares <topics-spider-middleware>` can now be defined as an :term:`asynchronous generator` (:issue:`4978`).
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The output of :class:`~scrapy.Request` callbacks defined as :ref:`coroutines <topics-coroutines>` is now processed asynchronously (:issue:`4978`).
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:class:`~scrapy.spiders.crawl.CrawlSpider` now supports :ref:`asynchronous callbacks <topics-coroutines>` (:issue:`5657`).
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New projects created with the :command:`startproject` command have :ref:`asyncio support <using-asyncio>` enabled by default (:issue:`5590`, :issue:`5679`).
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The :setting:`FEED_EXPORT_FIELDS` setting can now be defined as a dictionary to customize the output name of item fields, lifting the restriction that required output names to be valid Python identifiers, e.g. preventing them to have whitespace (:issue:`1008`, :issue:`3266`, :issue:`3696`).
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You can now customize :ref:`request fingerprinting <request-fingerprints>` through the new :setting:`REQUEST_FINGERPRINTER_CLASS` setting, instead of having to change it on every Scrapy component that relies on request fingerprinting (:issue:`900`, :issue:`3420`, :issue:`4113`, :issue:`4762`, :issue:`4524`).
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jsonl is now supported and encouraged as a file extension for JSON Lines files (:issue:`4848`).
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:meth:`ImagesPipeline.thumb_path <scrapy.pipelines.images.ImagesPipeline.thumb_path>` now receives the source :ref:`item <topics-items>` (:issue:`5504`, :issue:`5508`).
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Bug fixes
When using Google Cloud Storage with a :ref:`media pipeline <topics-media-pipeline>`, :setting:`FILES_EXPIRES` now also works when :setting:`FILES_STORE` does not point at the root of your Google Cloud Storage bucket (:issue:`5317`, :issue:`5318`).
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The :command:`parse` command now supports :ref:`asynchronous callbacks <topics-coroutines>` (:issue:`5424`, :issue:`5577`).
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When using the :command:`parse` command with a URL for which there is no available spider, an exception is no longer raised (:issue:`3264`, :issue:`3265`, :issue:`5375`, :issue:`5376`, :issue:`5497`).
System Message: ERROR/3 (<stdin>, line 4044); backlink
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System Message: ERROR/3 (<stdin>, line 4044); backlink
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System Message: ERROR/3 (<stdin>, line 4044); backlink
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:class:`~scrapy.http.TextResponse` now gives higher priority to the byte order mark when determining the text encoding of the response body, following the HTML living standard (:issue:`5601`, :issue:`5611`).
System Message: ERROR/3 (<stdin>, line 4048); backlink
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System Message: ERROR/3 (<stdin>, line 4048); backlink
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MIME sniffing takes the response body into account in FTP and HTTP/1.0 requests, as well as in cached requests (:issue:`4873`).
System Message: ERROR/3 (<stdin>, line 4055); backlink
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MIME sniffing now detects valid HTML 5 documents even if the html tag is missing (:issue:`4873`).
System Message: ERROR/3 (<stdin>, line 4058); backlink
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An exception is now raised if :setting:`ASYNCIO_EVENT_LOOP` has a value that does not match the asyncio event loop actually installed (:issue:`5529`).
System Message: ERROR/3 (<stdin>, line 4061); backlink
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Fixed :meth:`Headers.getlist() <scrapy.http.headers.Headers.getlist>` returning only the last header (:issue:`5515`, :issue:`5526`).
System Message: ERROR/3 (<stdin>, line 4065); backlink
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System Message: ERROR/3 (<stdin>, line 4065); backlink
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Fixed :class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` not ignoring the tar.gz file extension by default (:issue:`1837`, :issue:`2067`, :issue:`4066`)
System Message: ERROR/3 (<stdin>, line 4068); backlink
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Documentation
Clarified the return type of :meth:`Spider.parse <scrapy.Spider.parse>` (:issue:`5602`, :issue:`5608`).
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To enable :class:`~scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware` to do brotli compression, installing brotli is now recommended instead of installing brotlipy, as the former provides a more recent version of brotli.
System Message: ERROR/3 (<stdin>, line 4080); backlink
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:ref:`Signal documentation <topics-signals>` now mentions :ref:`coroutine support <topics-coroutines>` and uses it in code examples (:issue:`4852`, :issue:`5358`).
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:ref:`bans` now recommends Common Crawl instead of Google cache (:issue:`3582`, :issue:`5432`).
System Message: ERROR/3 (<stdin>, line 4093); backlink
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The new :ref:`topics-components` topic covers enforcing requirements on Scrapy components, like :ref:`downloader middlewares <topics-downloader-middleware>`, :ref:`extensions <topics-extensions>`, :ref:`item pipelines <topics-item-pipeline>`, :ref:`spider middlewares <topics-spider-middleware>`, and more; :ref:`enforce-asyncio-requirement` has also been added (:issue:`4978`).
System Message: ERROR/3 (<stdin>, line 4099); backlink
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System Message: ERROR/3 (<stdin>, line 4099); backlink
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:ref:`topics-settings` now indicates that setting values must be :ref:`picklable <pickle-picklable>` (:issue:`5607`, :issue:`5629`).
System Message: ERROR/3 (<stdin>, line 4106); backlink
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Removed outdated documentation (:issue:`5446`, :issue:`5373`, :issue:`5369`, :issue:`5370`, :issue:`5554`).
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Fixed typos (:issue:`5442`, :issue:`5455`, :issue:`5457`, :issue:`5461`, :issue:`5538`, :issue:`5553`, :issue:`5558`, :issue:`5624`, :issue:`5631`).
System Message: ERROR/3 (<stdin>, line 4112); backlink
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Fixed other issues (:issue:`5283`, :issue:`5284`, :issue:`5559`, :issue:`5567`, :issue:`5648`, :issue:`5659`, :issue:`5665`).
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Quality assurance
Added a continuous integration job to run twine check (:issue:`5655`, :issue:`5656`).
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Addressed test issues and warnings (:issue:`5560`, :issue:`5561`, :issue:`5612`, :issue:`5617`, :issue:`5639`, :issue:`5645`, :issue:`5662`, :issue:`5671`, :issue:`5675`).
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Cleaned up code (:issue:`4991`, :issue:`4995`, :issue:`5451`, :issue:`5487`, :issue:`5542`, :issue:`5667`, :issue:`5668`, :issue:`5672`).
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Applied minor code improvements (:issue:`5661`).
System Message: ERROR/3 (<stdin>, line 4134); backlink
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Scrapy 2.6.3 (2022-09-27)
Added support for pyOpenSSL 22.1.0, removing support for SSLv3 (:issue:`5634`, :issue:`5635`, :issue:`5636`).
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Upgraded the minimum versions of the following dependencies:
- cryptography: 2.0 → 3.3
- pyOpenSSL: 16.2.0 → 21.0.0
- service_identity: 16.0.0 → 18.1.0
- Twisted: 17.9.0 → 18.9.0
- zope.interface: 4.1.3 → 5.0.0
(:issue:`5621`, :issue:`5632`)
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Fixes test and documentation issues (:issue:`5612`, :issue:`5617`, :issue:`5631`).
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Scrapy 2.6.2 (2022-07-25)
Security bug fix:
When :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` processes a request with :reqmeta:`proxy` metadata, and that :reqmeta:`proxy` metadata includes proxy credentials, :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` sets the Proxy-Authorization header, but only if that header is not already set.
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System Message: ERROR/3 (<stdin>, line 4170); backlink
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There are third-party proxy-rotation downloader middlewares that set different :reqmeta:`proxy` metadata every time they process a request.
System Message: ERROR/3 (<stdin>, line 4177); backlink
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Because of request retries and redirects, the same request can be processed by downloader middlewares more than once, including both :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` and any third-party proxy-rotation downloader middleware.
System Message: ERROR/3 (<stdin>, line 4180); backlink
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These third-party proxy-rotation downloader middlewares could change the :reqmeta:`proxy` metadata of a request to a new value, but fail to remove the Proxy-Authorization header from the previous value of the :reqmeta:`proxy` metadata, causing the credentials of one proxy to be sent to a different proxy.
System Message: ERROR/3 (<stdin>, line 4185); backlink
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System Message: ERROR/3 (<stdin>, line 4185); backlink
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To prevent the unintended leaking of proxy credentials, the behavior of :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` is now as follows when processing a request:
System Message: ERROR/3 (<stdin>, line 4191); backlink
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If the request being processed defines :reqmeta:`proxy` metadata that includes credentials, the Proxy-Authorization header is always updated to feature those credentials.
System Message: ERROR/3 (<stdin>, line 4195); backlink
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If the request being processed defines :reqmeta:`proxy` metadata without credentials, the Proxy-Authorization header is removed unless it was originally defined for the same proxy URL.
System Message: ERROR/3 (<stdin>, line 4199); backlink
Unknown interpreted text role "reqmeta".
To remove proxy credentials while keeping the same proxy URL, remove the Proxy-Authorization header.
If the request has no :reqmeta:`proxy` metadata, or that metadata is a falsy value (e.g. None), the Proxy-Authorization header is removed.
System Message: ERROR/3 (<stdin>, line 4206); backlink
Unknown interpreted text role "reqmeta".
It is no longer possible to set a proxy URL through the :reqmeta:`proxy` metadata but set the credentials through the Proxy-Authorization header. Set proxy credentials through the :reqmeta:`proxy` metadata instead.
System Message: ERROR/3 (<stdin>, line 4210); backlink
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Also fixes the following regressions introduced in 2.6.0:
:class:`~scrapy.crawler.CrawlerProcess` supports again crawling multiple spiders (:issue:`5435`, :issue:`5436`)
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Installing a Twisted reactor before Scrapy does (e.g. importing :mod:`twisted.internet.reactor` somewhere at the module level) no longer prevents Scrapy from starting, as long as a different reactor is not specified in :setting:`TWISTED_REACTOR` (:issue:`5525`, :issue:`5528`)
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Fixed an exception that was being logged after the spider finished under certain conditions (:issue:`5437`, :issue:`5440`)
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The --output/-o command-line parameter supports again a value starting with a hyphen (:issue:`5444`, :issue:`5445`)
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The scrapy parse -h command no longer throws an error (:issue:`5481`, :issue:`5482`)
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Scrapy 2.6.1 (2022-03-01)
Fixes a regression introduced in 2.6.0 that would unset the request method when following redirects.
Scrapy 2.6.0 (2022-03-01)
Highlights:
:ref:`Security fixes for cookie handling <2.6-security-fixes>`
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Python 3.10 support
:ref:`asyncio support <using-asyncio>` is no longer considered experimental, and works out-of-the-box on Windows regardless of your Python version
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Feed exports now support :class:`pathlib.Path` output paths and per-feed :ref:`item filtering <item-filter>` and :ref:`post-processing <post-processing>`
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Security bug fixes
When a :class:`~scrapy.Request` object with cookies defined gets a redirect response causing a new :class:`~scrapy.Request` object to be scheduled, the cookies defined in the original :class:`~scrapy.Request` object are no longer copied into the new :class:`~scrapy.Request` object.
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If you manually set the Cookie header on a :class:`~scrapy.Request` object and the domain name of the redirect URL is not an exact match for the domain of the URL of the original :class:`~scrapy.Request` object, your Cookie header is now dropped from the new :class:`~scrapy.Request` object.
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The old behavior could be exploited by an attacker to gain access to your cookies. Please, see the cjvr-mfj7-j4j8 security advisory for more information.
Note
It is still possible to enable the sharing of cookies between different domains with a shared domain suffix (e.g. example.com and any subdomain) by defining the shared domain suffix (e.g. example.com) as the cookie domain when defining your cookies. See the documentation of the :class:`~scrapy.Request` class for more information.
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When the domain of a cookie, either received in the Set-Cookie header of a response or defined in a :class:`~scrapy.Request` object, is set to a public suffix, the cookie is now ignored unless the cookie domain is the same as the request domain.
System Message: ERROR/3 (<stdin>, line 4293); backlink
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The old behavior could be exploited by an attacker to inject cookies from a controlled domain into your cookiejar that could be sent to other domains not controlled by the attacker. Please, see the mfjm-vh54-3f96 security advisory for more information.
Modified requirements
The h2 dependency is now optional, only needed to :ref:`enable HTTP/2 support <twisted-http2-handler>`. (:issue:`5113`)
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Backward-incompatible changes
The formdata parameter of :class:`~scrapy.FormRequest`, if specified for a non-POST request, now overrides the URL query string, instead of being appended to it. (:issue:`2919`, :issue:`3579`)
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When a function is assigned to the :setting:`FEED_URI_PARAMS` setting, now the return value of that function, and not the params input parameter, will determine the feed URI parameters, unless that return value is None. (:issue:`4962`, :issue:`4966`)
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In :class:`scrapy.core.engine.ExecutionEngine`, methods :meth:`~scrapy.core.engine.ExecutionEngine.crawl`, :meth:`~scrapy.core.engine.ExecutionEngine.download`, :meth:`~scrapy.core.engine.ExecutionEngine.schedule`, and :meth:`~scrapy.core.engine.ExecutionEngine.spider_is_idle` now raise :exc:`RuntimeError` if called before :meth:`~scrapy.core.engine.ExecutionEngine.open_spider`. (:issue:`5090`)
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These methods used to assume that :attr:`ExecutionEngine.slot <scrapy.core.engine.ExecutionEngine.slot>` had been defined by a prior call to :meth:`~scrapy.core.engine.ExecutionEngine.open_spider`, so they were raising :exc:`AttributeError` instead.
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If the API of the configured :ref:`scheduler <topics-scheduler>` does not meet expectations, :exc:`TypeError` is now raised at startup time. Before, other exceptions would be raised at run time. (:issue:`3559`)
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The _encoding field of serialized :class:`~scrapy.Request` objects is now named encoding, in line with all other fields (:issue:`5130`)
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Deprecation removals
scrapy.http.TextResponse.body_as_unicode, deprecated in Scrapy 2.2, has now been removed. (:issue:`5393`)
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scrapy.item.BaseItem, deprecated in Scrapy 2.2, has now been removed. (:issue:`5398`)
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scrapy.item.DictItem, deprecated in Scrapy 1.8, has now been removed. (:issue:`5398`)
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scrapy.Spider.make_requests_from_url, deprecated in Scrapy 1.4, has now been removed. (:issue:`4178`, :issue:`4356`)
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Deprecations
When a function is assigned to the :setting:`FEED_URI_PARAMS` setting, returning None or modifying the params input parameter is now deprecated. Return a new dictionary instead. (:issue:`4962`, :issue:`4966`)
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:mod:`scrapy.utils.reqser` is deprecated. (:issue:`5130`)
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Instead of :func:`~scrapy.utils.reqser.request_to_dict`, use the new :meth:`.Request.to_dict` method.
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Instead of :func:`~scrapy.utils.reqser.request_from_dict`, use the new :func:`scrapy.utils.request.request_from_dict` function.
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In :mod:`scrapy.squeues`, the following queue classes are deprecated: :class:`~scrapy.squeues.PickleFifoDiskQueueNonRequest`, :class:`~scrapy.squeues.PickleLifoDiskQueueNonRequest`, :class:`~scrapy.squeues.MarshalFifoDiskQueueNonRequest`, and :class:`~scrapy.squeues.MarshalLifoDiskQueueNonRequest`. You should instead use: :class:`~scrapy.squeues.PickleFifoDiskQueue`, :class:`~scrapy.squeues.PickleLifoDiskQueue`, :class:`~scrapy.squeues.MarshalFifoDiskQueue`, and :class:`~scrapy.squeues.MarshalLifoDiskQueue`. (:issue:`5117`)
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Many aspects of :class:`scrapy.core.engine.ExecutionEngine` that come from a time when this class could handle multiple :class:`~scrapy.Spider` objects at a time have been deprecated. (:issue:`5090`)
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The :meth:`~scrapy.core.engine.ExecutionEngine.has_capacity` method is deprecated.
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The :meth:`~scrapy.core.engine.ExecutionEngine.schedule` method is deprecated, use :meth:`~scrapy.core.engine.ExecutionEngine.crawl` or :meth:`~scrapy.core.engine.ExecutionEngine.download` instead.
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The :attr:`~scrapy.core.engine.ExecutionEngine.open_spiders` attribute is deprecated, use :attr:`~scrapy.core.engine.ExecutionEngine.spider` instead.
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The spider parameter is deprecated for the following methods:
:meth:`~scrapy.core.engine.ExecutionEngine.spider_is_idle`
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:meth:`~scrapy.core.engine.ExecutionEngine.crawl`
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:meth:`~scrapy.core.engine.ExecutionEngine.download`
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Instead, call :meth:`~scrapy.core.engine.ExecutionEngine.open_spider` first to set the :class:`~scrapy.Spider` object.
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:func:`scrapy.utils.response.response_httprepr` is now deprecated. (:issue:`4972`)
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New features
You can now use :ref:`item filtering <item-filter>` to control which items are exported to each output feed. (:issue:`4575`, :issue:`5178`, :issue:`5161`, :issue:`5203`)
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You can now apply :ref:`post-processing <post-processing>` to feeds, and :ref:`built-in post-processing plugins <builtin-plugins>` are provided for output file compression. (:issue:`2174`, :issue:`5168`, :issue:`5190`)
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The :setting:`FEEDS` setting now supports :class:`pathlib.Path` objects as keys. (:issue:`5383`, :issue:`5384`)
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Enabling :ref:`asyncio <using-asyncio>` while using Windows and Python 3.8 or later will automatically switch the asyncio event loop to one that allows Scrapy to work. See :ref:`asyncio-windows`. (:issue:`4976`, :issue:`5315`)
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The :command:`genspider` command now supports a start URL instead of a domain name. (:issue:`4439`)
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:mod:`scrapy.utils.defer` gained 2 new functions, :func:`~scrapy.utils.defer.deferred_to_future` and :func:`~scrapy.utils.defer.maybe_deferred_to_future`, to help :ref:`await on Deferreds when using the asyncio reactor <asyncio-await-dfd>`. (:issue:`5288`)
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:ref:`Amazon S3 feed export storage <topics-feed-storage-s3>` gained support for temporary security credentials (:setting:`AWS_SESSION_TOKEN`) and endpoint customization (:setting:`AWS_ENDPOINT_URL`). (:issue:`4998`, :issue:`5210`)
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New :setting:`LOG_FILE_APPEND` setting to allow truncating the log file. (:issue:`5279`)
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:attr:`Request.cookies <scrapy.Request.cookies>` values that are :class:`bool`, :class:`float` or :class:`int` are cast to :class:`str`. (:issue:`5252`, :issue:`5253`)
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You may now raise :exc:`~scrapy.exceptions.CloseSpider` from a handler of the :signal:`spider_idle` signal to customize the reason why the spider is stopping. (:issue:`5191`)
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When using :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware`, the proxy URL for non-HTTPS HTTP/1.1 requests no longer needs to include a URL scheme. (:issue:`4505`, :issue:`4649`)
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All built-in queues now expose a peek method that returns the next queue object (like pop) but does not remove the returned object from the queue. (:issue:`5112`)
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If the underlying queue does not support peeking (e.g. because you are not using queuelib 1.6.1 or later), the peek method raises :exc:`NotImplementedError`.
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:class:`~scrapy.Request` and :class:`~scrapy.http.Response` now have an attributes attribute that makes subclassing easier. For :class:`~scrapy.Request`, it also allows subclasses to work with :func:`scrapy.utils.request.request_from_dict`. (:issue:`1877`, :issue:`5130`, :issue:`5218`)
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The :meth:`~scrapy.core.scheduler.BaseScheduler.open` and :meth:`~scrapy.core.scheduler.BaseScheduler.close` methods of the :ref:`scheduler <topics-scheduler>` are now optional. (:issue:`3559`)
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HTTP/1.1 :exc:`~scrapy.core.downloader.handlers.http11.TunnelError` exceptions now only truncate response bodies longer than 1000 characters, instead of those longer than 32 characters, making it easier to debug such errors. (:issue:`4881`, :issue:`5007`)
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:class:`~scrapy.loader.ItemLoader` now supports non-text responses. (:issue:`5145`, :issue:`5269`)
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Bug fixes
The :setting:`TWISTED_REACTOR` and :setting:`ASYNCIO_EVENT_LOOP` settings are no longer ignored if defined in :attr:`~scrapy.Spider.custom_settings`. (:issue:`4485`, :issue:`5352`)
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Removed a module-level Twisted reactor import that could prevent :ref:`using the asyncio reactor <using-asyncio>`. (:issue:`5357`)
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The :command:`startproject` command works with existing folders again. (:issue:`4665`, :issue:`4676`)
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The :setting:`FEED_URI_PARAMS` setting now behaves as documented. (:issue:`4962`, :issue:`4966`)
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:attr:`Request.cb_kwargs <scrapy.Request.cb_kwargs>` once again allows the callback keyword. (:issue:`5237`, :issue:`5251`, :issue:`5264`)
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Made :func:`scrapy.utils.response.open_in_browser` support more complex HTML. (:issue:`5319`, :issue:`5320`)
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Fixed :attr:`CSVFeedSpider.quotechar <scrapy.spiders.CSVFeedSpider.quotechar>` being interpreted as the CSV file encoding. (:issue:`5391`, :issue:`5394`)
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Added missing setuptools to the list of dependencies. (:issue:`5122`)
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:class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` now also works as expected with links that have comma-separated rel attribute values including nofollow. (:issue:`5225`)
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Fixed a :exc:`TypeError` that could be raised during :ref:`feed export <topics-feed-exports>` parameter parsing. (:issue:`5359`)
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Documentation
:ref:`asyncio support <using-asyncio>` is no longer considered experimental. (:issue:`5332`)
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Included :ref:`Windows-specific help for asyncio usage <asyncio-windows>`. (:issue:`4976`, :issue:`5315`)
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Rewrote :ref:`topics-headless-browsing` with up-to-date best practices. (:issue:`4484`, :issue:`4613`)
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Documented :ref:`local file naming in media pipelines <topics-file-naming>`. (:issue:`5069`, :issue:`5152`)
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:ref:`faq` now covers spider file name collision issues. (:issue:`2680`, :issue:`3669`)
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Provided better context and instructions to disable the :setting:`URLLENGTH_LIMIT` setting. (:issue:`5135`, :issue:`5250`)
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Documented that Reppy parser does not support Python 3.9+. (:issue:`5226`, :issue:`5231`)
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Documented :ref:`the scheduler component <topics-scheduler>`. (:issue:`3537`, :issue:`3559`)
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Documented the method used by :ref:`media pipelines <topics-media-pipeline>` to :ref:`determine if a file has expired <file-expiration>`. (:issue:`5120`, :issue:`5254`)
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:ref:`run-multiple-spiders` now features :func:`scrapy.utils.project.get_project_settings` usage. (:issue:`5070`)
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:ref:`run-multiple-spiders` now covers what happens when you define different per-spider values for some settings that cannot differ at run time. (:issue:`4485`, :issue:`5352`)
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Extended the documentation of the :class:`~scrapy.extensions.statsmailer.StatsMailer` extension. (:issue:`5199`, :issue:`5217`)
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Added :setting:`JOBDIR` to :ref:`topics-settings`. (:issue:`5173`, :issue:`5224`)
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Documented :attr:`Spider.attribute <scrapy.Spider.attribute>`. (:issue:`5174`, :issue:`5244`)
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Documented :attr:`TextResponse.urljoin <scrapy.http.TextResponse.urljoin>`. (:issue:`1582`)
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Added the body_length parameter to the documented signature of the :signal:`headers_received` signal. (:issue:`5270`)
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Clarified :meth:`SelectorList.get <scrapy.selector.SelectorList.get>` usage in the :ref:`tutorial <intro-tutorial>`. (:issue:`5256`)
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The documentation now features the shortest import path of classes with multiple import paths. (:issue:`2733`, :issue:`5099`)
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quotes.toscrape.com references now use HTTPS instead of HTTP. (:issue:`5395`, :issue:`5396`)
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Added a link to our Discord server to :ref:`getting-help`. (:issue:`5421`, :issue:`5422`)
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The pronunciation of the project name is now :ref:`officially <intro-overview>` /ˈskreɪpaɪ/. (:issue:`5280`, :issue:`5281`)
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Added the Scrapy logo to the README. (:issue:`5255`, :issue:`5258`)
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Fixed issues and implemented minor improvements. (:issue:`3155`, :issue:`4335`, :issue:`5074`, :issue:`5098`, :issue:`5134`, :issue:`5180`, :issue:`5194`, :issue:`5239`, :issue:`5266`, :issue:`5271`, :issue:`5273`, :issue:`5274`, :issue:`5276`, :issue:`5347`, :issue:`5356`, :issue:`5414`, :issue:`5415`, :issue:`5416`, :issue:`5419`, :issue:`5420`)
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Quality Assurance
Added support for Python 3.10. (:issue:`5212`, :issue:`5221`, :issue:`5265`)
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Significantly reduced memory usage by :func:`scrapy.utils.response.response_httprepr`, used by the :class:`~scrapy.downloadermiddlewares.stats.DownloaderStats` downloader middleware, which is enabled by default. (:issue:`4964`, :issue:`4972`)
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Removed uses of the deprecated :mod:`optparse` module. (:issue:`5366`, :issue:`5374`)
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Extended typing hints. (:issue:`5077`, :issue:`5090`, :issue:`5100`, :issue:`5108`, :issue:`5171`, :issue:`5215`, :issue:`5334`)
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Improved tests, fixed CI issues, removed unused code. (:issue:`5094`, :issue:`5157`, :issue:`5162`, :issue:`5198`, :issue:`5207`, :issue:`5208`, :issue:`5229`, :issue:`5298`, :issue:`5299`, :issue:`5310`, :issue:`5316`, :issue:`5333`, :issue:`5388`, :issue:`5389`, :issue:`5400`, :issue:`5401`, :issue:`5404`, :issue:`5405`, :issue:`5407`, :issue:`5410`, :issue:`5412`, :issue:`5425`, :issue:`5427`)
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Implemented improvements for contributors. (:issue:`5080`, :issue:`5082`, :issue:`5177`, :issue:`5200`)
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Implemented cleanups. (:issue:`5095`, :issue:`5106`, :issue:`5209`, :issue:`5228`, :issue:`5235`, :issue:`5245`, :issue:`5246`, :issue:`5292`, :issue:`5314`, :issue:`5322`)
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Scrapy 2.5.1 (2021-10-05)
Security bug fix:
If you use :class:`~scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware` (i.e. the http_user and http_pass spider attributes) for HTTP authentication, any request exposes your credentials to the request target.
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To prevent unintended exposure of authentication credentials to unintended domains, you must now additionally set a new, additional spider attribute, http_auth_domain, and point it to the specific domain to which the authentication credentials must be sent.
If the http_auth_domain spider attribute is not set, the domain of the first request will be considered the HTTP authentication target, and authentication credentials will only be sent in requests targeting that domain.
If you need to send the same HTTP authentication credentials to multiple domains, you can use :func:`w3lib.http.basic_auth_header` instead to set the value of the Authorization header of your requests.
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If you really want your spider to send the same HTTP authentication credentials to any domain, set the http_auth_domain spider attribute to None.
Finally, if you are a user of scrapy-splash, know that this version of Scrapy breaks compatibility with scrapy-splash 0.7.2 and earlier. You will need to upgrade scrapy-splash to a greater version for it to continue to work.
Scrapy 2.5.0 (2021-04-06)
Highlights:
Official Python 3.9 support
Experimental :ref:`HTTP/2 support <twisted-http2-handler>`
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New :func:`~scrapy.downloadermiddlewares.retry.get_retry_request` function to retry requests from spider callbacks
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New :class:`~scrapy.signals.headers_received` signal that allows stopping downloads early
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New :class:`Response.protocol <scrapy.http.Response.protocol>` attribute
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Deprecation removals
Removed all code that :ref:`was deprecated in 1.7.0 <1.7-deprecations>` and had not :ref:`already been removed in 2.4.0 <2.4-deprecation-removals>`. (:issue:`4901`)
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Removed support for the SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE environment variable, :ref:`deprecated in 1.8.0 <1.8-deprecations>`. (:issue:`4912`)
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Deprecations
The :mod:`scrapy.utils.py36` module is now deprecated in favor of :mod:`scrapy.utils.asyncgen`. (:issue:`4900`)
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New features
Experimental :ref:`HTTP/2 support <twisted-http2-handler>` through a new download handler that can be assigned to the https protocol in the :setting:`DOWNLOAD_HANDLERS` setting. (:issue:`1854`, :issue:`4769`, :issue:`5058`, :issue:`5059`, :issue:`5066`)
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The new :func:`scrapy.downloadermiddlewares.retry.get_retry_request` function may be used from spider callbacks or middlewares to handle the retrying of a request beyond the scenarios that :class:`~scrapy.downloadermiddlewares.retry.RetryMiddleware` supports. (:issue:`3590`, :issue:`3685`, :issue:`4902`)
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The new :class:`~scrapy.signals.headers_received` signal gives early access to response headers and allows :ref:`stopping downloads <topics-stop-response-download>`. (:issue:`1772`, :issue:`4897`)
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The new :attr:`Response.protocol <scrapy.http.Response.protocol>` attribute gives access to the string that identifies the protocol used to download a response. (:issue:`4878`)
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:ref:`Stats <topics-stats>` now include the following entries that indicate the number of successes and failures in storing :ref:`feeds <topics-feed-exports>`:
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feedexport/success_count/<storage type> feedexport/failed_count/<storage type>
Where <storage type> is the feed storage backend class name, such as :class:`~scrapy.extensions.feedexport.FileFeedStorage` or :class:`~scrapy.extensions.feedexport.FTPFeedStorage`.
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(:issue:`3947`, :issue:`4850`)
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The :class:`~scrapy.spidermiddlewares.urllength.UrlLengthMiddleware` spider middleware now logs ignored URLs with INFO :ref:`logging level <levels>` instead of DEBUG, and it now includes the following entry into :ref:`stats <topics-stats>` to keep track of the number of ignored URLs:
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urllength/request_ignored_count
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The :class:`~scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware` downloader middleware now logs the number of decompressed responses and the total count of resulting bytes:
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httpcompression/response_bytes httpcompression/response_count
(:issue:`4797`, :issue:`4799`)
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Bug fixes
Fixed installation on PyPy installing PyDispatcher in addition to PyPyDispatcher, which could prevent Scrapy from working depending on which package got imported. (:issue:`4710`, :issue:`4814`)
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When inspecting a callback to check if it is a generator that also returns a value, an exception is no longer raised if the callback has a docstring with lower indentation than the following code. (:issue:`4477`, :issue:`4935`)
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The Content-Length header is no longer omitted from responses when using the default, HTTP/1.1 download handler (see :setting:`DOWNLOAD_HANDLERS`). (:issue:`5009`, :issue:`5034`, :issue:`5045`, :issue:`5057`, :issue:`5062`)
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Setting the :reqmeta:`handle_httpstatus_all` request meta key to False now has the same effect as not setting it at all, instead of having the same effect as setting it to True. (:issue:`3851`, :issue:`4694`)
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Documentation
Added instructions to :ref:`install Scrapy in Windows using pip <intro-install-windows>`. (:issue:`4715`, :issue:`4736`)
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Logging documentation now includes :ref:`additional ways to filter logs <topics-logging-advanced-customization>`. (:issue:`4216`, :issue:`4257`, :issue:`4965`)
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Covered how to deal with long lists of allowed domains in the :ref:`FAQ <faq>`. (:issue:`2263`, :issue:`3667`)
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Covered scrapy-bench in :ref:`benchmarking`. (:issue:`4996`, :issue:`5016`)
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Clarified that one :ref:`extension <topics-extensions>` instance is created per crawler. (:issue:`5014`)
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Fixed some errors in examples. (:issue:`4829`, :issue:`4830`, :issue:`4907`, :issue:`4909`, :issue:`5008`)
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Fixed some external links, typos, and so on. (:issue:`4892`, :issue:`4899`, :issue:`4936`, :issue:`4942`, :issue:`5005`, :issue:`5063`)
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The :ref:`list of Request.meta keys <topics-request-meta>` is now sorted alphabetically. (:issue:`5061`, :issue:`5065`)
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Updated references to Scrapinghub, which is now called Zyte. (:issue:`4973`, :issue:`5072`)
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Added a mention to contributors in the README. (:issue:`4956`)
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Reduced the top margin of lists. (:issue:`4974`)
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Quality Assurance
Made Python 3.9 support official (:issue:`4757`, :issue:`4759`)
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Extended typing hints (:issue:`4895`)
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Fixed deprecated uses of the Twisted API. (:issue:`4940`, :issue:`4950`, :issue:`5073`)
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Made our tests run with the new pip resolver. (:issue:`4710`, :issue:`4814`)
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Added tests to ensure that :ref:`coroutine support <coroutine-support>` is tested. (:issue:`4987`)
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Migrated from Travis CI to GitHub Actions. (:issue:`4924`)
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Fixed CI issues. (:issue:`4986`, :issue:`5020`, :issue:`5022`, :issue:`5027`, :issue:`5052`, :issue:`5053`)
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Implemented code refactorings, style fixes and cleanups. (:issue:`4911`, :issue:`4982`, :issue:`5001`, :issue:`5002`, :issue:`5076`)
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Scrapy 2.4.1 (2020-11-17)
Fixed :ref:`feed exports <topics-feed-exports>` overwrite support (:issue:`4845`, :issue:`4857`, :issue:`4859`)
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Fixed the AsyncIO event loop handling, which could make code hang (:issue:`4855`, :issue:`4872`)
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Fixed the IPv6-capable DNS resolver :class:`~scrapy.resolver.CachingHostnameResolver` for download handlers that call :meth:`reactor.resolve <twisted.internet.interfaces.IReactorCore.resolve>` (:issue:`4802`, :issue:`4803`)
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Fixed the output of the :command:`genspider` command showing placeholders instead of the import path of the generated spider module (:issue:`4874`)
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Migrated Windows CI from Azure Pipelines to GitHub Actions (:issue:`4869`, :issue:`4876`)
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Scrapy 2.4.0 (2020-10-11)
Highlights:
Python 3.5 support has been dropped.
The file_path method of :ref:`media pipelines <topics-media-pipeline>` can now access the source :ref:`item <topics-items>`.
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This allows you to set a download file path based on item data.
The new item_export_kwargs key of the :setting:`FEEDS` setting allows to define keyword parameters to pass to :ref:`item exporter classes <topics-exporters>`
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You can now choose whether :ref:`feed exports <topics-feed-exports>` overwrite or append to the output file.
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For example, when using the :command:`crawl` or :command:`runspider` commands, you can use the -O option instead of -o to overwrite the output file.
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Zstd-compressed responses are now supported if zstandard is installed.
In settings, where the import path of a class is required, it is now possible to pass a class object instead.
Modified requirements
Python 3.6 or greater is now required; support for Python 3.5 has been dropped
As a result:
When using PyPy, PyPy 7.2.0 or greater :ref:`is now required <faq-python-versions>`
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For Amazon S3 storage support in :ref:`feed exports <topics-feed-storage-s3>` or :ref:`media pipelines <media-pipelines-s3>`, botocore 1.4.87 or greater is now required
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To use the :ref:`images pipeline <images-pipeline>`, Pillow 4.0.0 or greater is now required
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(:issue:`4718`, :issue:`4732`, :issue:`4733`, :issue:`4742`, :issue:`4743`, :issue:`4764`)
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Backward-incompatible changes
:class:`~scrapy.downloadermiddlewares.cookies.CookiesMiddleware` once again discards cookies defined in :attr:`.Request.headers`.
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We decided to revert this bug fix, introduced in Scrapy 2.2.0, because it was reported that the current implementation could break existing code.
If you need to set cookies for a request, use the :class:`Request.cookies <scrapy.Request>` parameter.
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A future version of Scrapy will include a new, better implementation of the reverted bug fix.
(:issue:`4717`, :issue:`4823`)
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Deprecation removals
:class:`scrapy.extensions.feedexport.S3FeedStorage` no longer reads the values of access_key and secret_key from the running project settings when they are not passed to its __init__ method; you must either pass those parameters to its __init__ method or use :class:`S3FeedStorage.from_crawler <scrapy.extensions.feedexport.S3FeedStorage.from_crawler>` (:issue:`4356`, :issue:`4411`, :issue:`4688`)
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:attr:`Rule.process_request <scrapy.spiders.crawl.Rule.process_request>` no longer admits callables which expect a single request parameter, rather than both request and response (:issue:`4818`)
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Deprecations
In custom :ref:`media pipelines <topics-media-pipeline>`, signatures that do not accept a keyword-only item parameter in any of the methods that :ref:`now support this parameter <media-pipeline-item-parameter>` are now deprecated (:issue:`4628`, :issue:`4686`)
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In custom :ref:`feed storage backend classes <topics-feed-storage>`, __init__ method signatures that do not accept a keyword-only feed_options parameter are now deprecated (:issue:`547`, :issue:`716`, :issue:`4512`)
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The :class:`scrapy.utils.python.WeakKeyCache` class is now deprecated (:issue:`4684`, :issue:`4701`)
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The :func:`scrapy.utils.boto.is_botocore` function is now deprecated, use :func:`scrapy.utils.boto.is_botocore_available` instead (:issue:`4734`, :issue:`4776`)
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New features
The following methods of :ref:`media pipelines <topics-media-pipeline>` now accept an item keyword-only parameter containing the source :ref:`item <topics-items>`:
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In :class:`scrapy.pipelines.files.FilesPipeline`:
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:meth:`~scrapy.pipelines.files.FilesPipeline.file_downloaded`
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:meth:`~scrapy.pipelines.files.FilesPipeline.file_path`
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:meth:`~scrapy.pipelines.files.FilesPipeline.media_downloaded`
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:meth:`~scrapy.pipelines.files.FilesPipeline.media_to_download`
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:meth:`~scrapy.pipelines.images.ImagesPipeline.file_downloaded`
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:meth:`~scrapy.pipelines.images.ImagesPipeline.file_path`
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:meth:`~scrapy.pipelines.images.ImagesPipeline.get_images`
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:meth:`~scrapy.pipelines.images.ImagesPipeline.image_downloaded`
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:meth:`~scrapy.pipelines.images.ImagesPipeline.media_downloaded`
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:meth:`~scrapy.pipelines.images.ImagesPipeline.media_to_download`
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(:issue:`4628`, :issue:`4686`)
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The new item_export_kwargs key of the :setting:`FEEDS` setting allows to define keyword parameters to pass to :ref:`item exporter classes <topics-exporters>` (:issue:`4606`, :issue:`4768`)
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:ref:`Feed exports <topics-feed-exports>` gained overwrite support:
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When using the :command:`crawl` or :command:`runspider` commands, you can use the -O option instead of -o to overwrite the output file
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You can use the overwrite key in the :setting:`FEEDS` setting to configure whether to overwrite the output file (True) or append to its content (False)
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The __init__ and from_crawler methods of :ref:`feed storage backend classes <topics-feed-storage>` now receive a new keyword-only parameter, feed_options, which is a dictionary of :ref:`feed options <feed-options>`
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(:issue:`547`, :issue:`716`, :issue:`4512`)
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Zstd-compressed responses are now supported if zstandard is installed (:issue:`4831`)
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In settings, where the import path of a class is required, it is now possible to pass a class object instead (:issue:`3870`, :issue:`3873`).
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This includes also settings where only part of its value is made of an import path, such as :setting:`DOWNLOADER_MIDDLEWARES` or :setting:`DOWNLOAD_HANDLERS`.
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:ref:`Downloader middlewares <topics-downloader-middleware>` can now override :class:`response.request <scrapy.http.Response.request>`.
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If a :ref:`downloader middleware <topics-downloader-middleware>` returns a :class:`~scrapy.http.Response` object from :meth:`~scrapy.downloadermiddlewares.DownloaderMiddleware.process_response` or :meth:`~scrapy.downloadermiddlewares.DownloaderMiddleware.process_exception` with a custom :class:`~scrapy.Request` object assigned to :class:`response.request <scrapy.http.Response.request>`:
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The response is handled by the callback of that custom :class:`~scrapy.Request` object, instead of being handled by the callback of the original :class:`~scrapy.Request` object
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That custom :class:`~scrapy.Request` object is now sent as the request argument to the :signal:`response_received` signal, instead of the original :class:`~scrapy.Request` object
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(:issue:`4529`, :issue:`4632`)
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When using the :ref:`FTP feed storage backend <topics-feed-storage-ftp>`:
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It is now possible to set the new overwrite :ref:`feed option <feed-options>` to False to append to an existing file instead of overwriting it
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The FTP password can now be omitted if it is not necessary
(:issue:`547`, :issue:`716`, :issue:`4512`)
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The __init__ method of :class:`~scrapy.exporters.CsvItemExporter` now supports an errors parameter to indicate how to handle encoding errors (:issue:`4755`)
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When :ref:`using asyncio <using-asyncio>`, it is now possible to :ref:`set a custom asyncio loop <using-custom-loops>` (:issue:`4306`, :issue:`4414`)
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Serialized requests (see :ref:`topics-jobs`) now support callbacks that are spider methods that delegate on other callable (:issue:`4756`)
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When a response is larger than :setting:`DOWNLOAD_MAXSIZE`, the logged message is now a warning, instead of an error (:issue:`3874`, :issue:`3886`, :issue:`4752`)
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Bug fixes
The :command:`genspider` command no longer overwrites existing files unless the --force option is used (:issue:`4561`, :issue:`4616`, :issue:`4623`)
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Cookies with an empty value are no longer considered invalid cookies (:issue:`4772`)
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The :command:`runspider` command now supports files with the .pyw file extension (:issue:`4643`, :issue:`4646`)
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The :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` middleware now simply ignores unsupported proxy values (:issue:`3331`, :issue:`4778`)
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Checks for generator callbacks with a return statement no longer warn about return statements in nested functions (:issue:`4720`, :issue:`4721`)
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The system file mode creation mask no longer affects the permissions of files generated using the :command:`startproject` command (:issue:`4722`)
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:func:`scrapy.utils.iterators.xmliter` now supports namespaced node names (:issue:`861`, :issue:`4746`)
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:class:`~scrapy.Request` objects can now have about: URLs, which can work when using a headless browser (:issue:`4835`)
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Documentation
The :setting:`FEED_URI_PARAMS` setting is now documented (:issue:`4671`, :issue:`4724`)
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Improved the documentation of :ref:`link extractors <topics-link-extractors>` with an usage example from a spider callback and reference documentation for the :class:`~scrapy.link.Link` class (:issue:`4751`, :issue:`4775`)
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Clarified the impact of :setting:`CONCURRENT_REQUESTS` when using the :class:`~scrapy.extensions.closespider.CloseSpider` extension (:issue:`4836`)
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Removed references to Python 2’s unicode type (:issue:`4547`, :issue:`4703`)
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We now have an :ref:`official deprecation policy <deprecation-policy>` (:issue:`4705`)
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Our :ref:`documentation policies <documentation-policies>` now cover usage of Sphinx’s :rst:dir:`versionadded` and :rst:dir:`versionchanged` directives, and we have removed usages referencing Scrapy 1.4.0 and earlier versions (:issue:`3971`, :issue:`4310`)
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Other documentation cleanups (:issue:`4090`, :issue:`4782`, :issue:`4800`, :issue:`4801`, :issue:`4809`, :issue:`4816`, :issue:`4825`)
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Quality assurance
Extended typing hints (:issue:`4243`, :issue:`4691`)
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Added tests for the :command:`check` command (:issue:`4663`)
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Fixed test failures on Debian (:issue:`4726`, :issue:`4727`, :issue:`4735`)
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Improved Windows test coverage (:issue:`4723`)
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Switched to :ref:`formatted string literals <f-strings>` where possible (:issue:`4307`, :issue:`4324`, :issue:`4672`)
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Modernized :func:`super` usage (:issue:`4707`)
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Other code and test cleanups (:issue:`1790`, :issue:`3288`, :issue:`4165`, :issue:`4564`, :issue:`4651`, :issue:`4714`, :issue:`4738`, :issue:`4745`, :issue:`4747`, :issue:`4761`, :issue:`4765`, :issue:`4804`, :issue:`4817`, :issue:`4820`, :issue:`4822`, :issue:`4839`)
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Scrapy 2.3.0 (2020-08-04)
Highlights:
:ref:`Feed exports <topics-feed-exports>` now support :ref:`Google Cloud Storage <topics-feed-storage-gcs>` as a storage backend
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The new :setting:`FEED_EXPORT_BATCH_ITEM_COUNT` setting allows to deliver output items in batches of up to the specified number of items.
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It also serves as a workaround for :ref:`delayed file delivery <delayed-file-delivery>`, which causes Scrapy to only start item delivery after the crawl has finished when using certain storage backends (:ref:`S3 <topics-feed-storage-s3>`, :ref:`FTP <topics-feed-storage-ftp>`, and now :ref:`GCS <topics-feed-storage-gcs>`).
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The base implementation of :ref:`item loaders <topics-loaders>` has been moved into a separate library, :doc:`itemloaders <itemloaders:index>`, allowing usage from outside Scrapy and a separate release schedule
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Deprecation removals
Removed the following classes and their parent modules from scrapy.linkextractors:
- htmlparser.HtmlParserLinkExtractor
- regex.RegexLinkExtractor
- sgml.BaseSgmlLinkExtractor
- sgml.SgmlLinkExtractor
Use :class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` instead (:issue:`4356`, :issue:`4679`)
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Deprecations
The scrapy.utils.python.retry_on_eintr function is now deprecated (:issue:`4683`)
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New features
:ref:`Feed exports <topics-feed-exports>` support :ref:`Google Cloud Storage <topics-feed-storage-gcs>` (:issue:`685`, :issue:`3608`)
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New :setting:`FEED_EXPORT_BATCH_ITEM_COUNT` setting for batch deliveries (:issue:`4250`, :issue:`4434`)
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The :command:`parse` command now allows specifying an output file (:issue:`4317`, :issue:`4377`)
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:meth:`.Request.from_curl` and :func:`~scrapy.utils.curl.curl_to_request_kwargs` now also support --data-raw (:issue:`4612`)
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A parse callback may now be used in built-in spider subclasses, such as :class:`~scrapy.spiders.CrawlSpider` (:issue:`712`, :issue:`732`, :issue:`781`, :issue:`4254` )
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Bug fixes
Fixed the :ref:`CSV exporting <topics-feed-format-csv>` of :ref:`dataclass items <dataclass-items>` and :ref:`attr.s items <attrs-items>` (:issue:`4667`, :issue:`4668`)
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:meth:`.Request.from_curl` and :func:`~scrapy.utils.curl.curl_to_request_kwargs` now set the request method to POST when a request body is specified and no request method is specified (:issue:`4612`)
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The processing of ANSI escape sequences in enabled in Windows 10.0.14393 and later, where it is required for colored output (:issue:`4393`, :issue:`4403`)
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Documentation
Updated the OpenSSL cipher list format link in the documentation about the :setting:`DOWNLOADER_CLIENT_TLS_CIPHERS` setting (:issue:`4653`)
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Simplified the code example in :ref:`topics-loaders-dataclass` (:issue:`4652`)
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Quality assurance
The base implementation of :ref:`item loaders <topics-loaders>` has been moved into :doc:`itemloaders <itemloaders:index>` (:issue:`4005`, :issue:`4516`)
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Fixed a silenced error in some scheduler tests (:issue:`4644`, :issue:`4645`)
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Renewed the localhost certificate used for SSL tests (:issue:`4650`)
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Removed cookie-handling code specific to Python 2 (:issue:`4682`)
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Stopped using Python 2 unicode literal syntax (:issue:`4704`)
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Stopped using a backlash for line continuation (:issue:`4673`)
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Removed unneeded entries from the MyPy exception list (:issue:`4690`)
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Automated tests now pass on Windows as part of our continuous integration system (:issue:`4458`)
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Automated tests now pass on the latest PyPy version for supported Python versions in our continuous integration system (:issue:`4504`)
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Scrapy 2.2.1 (2020-07-17)
The :command:`startproject` command no longer makes unintended changes to the permissions of files in the destination folder, such as removing execution permissions (:issue:`4662`, :issue:`4666`)
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Scrapy 2.2.0 (2020-06-24)
Highlights:
Python 3.5.2+ is required now
:ref:`dataclass objects <dataclass-items>` and :ref:`attrs objects <attrs-items>` are now valid :ref:`item types <item-types>`
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New :meth:`TextResponse.json <scrapy.http.TextResponse.json>` method
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New :signal:`bytes_received` signal that allows canceling response download
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:class:`~scrapy.downloadermiddlewares.cookies.CookiesMiddleware` fixes
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Backward-incompatible changes
Support for Python 3.5.0 and 3.5.1 has been dropped; Scrapy now refuses to run with a Python version lower than 3.5.2, which introduced :class:`typing.Type` (:issue:`4615`)
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Deprecations
TextResponse.body_as_unicode() is now deprecated, use :attr:`TextResponse.text <scrapy.http.TextResponse.text>` instead (:issue:`4546`, :issue:`4555`, :issue:`4579`)
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:class:`scrapy.item.BaseItem` is now deprecated, use :class:`scrapy.item.Item` instead (:issue:`4534`)
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New features
:ref:`dataclass objects <dataclass-items>` and :ref:`attrs objects <attrs-items>` are now valid :ref:`item types <item-types>`, and a new itemadapter library makes it easy to write code that :ref:`supports any item type <supporting-item-types>` (:issue:`2749`, :issue:`2807`, :issue:`3761`, :issue:`3881`, :issue:`4642`)
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A new :meth:`TextResponse.json <scrapy.http.TextResponse.json>` method allows to deserialize JSON responses (:issue:`2444`, :issue:`4460`, :issue:`4574`)
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A new :signal:`bytes_received` signal allows monitoring response download progress and :ref:`stopping downloads <topics-stop-response-download>` (:issue:`4205`, :issue:`4559`)
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The dictionaries in the result list of a :ref:`media pipeline <topics-media-pipeline>` now include a new key, status, which indicates if the file was downloaded or, if the file was not downloaded, why it was not downloaded; see :meth:`FilesPipeline.get_media_requests <scrapy.pipelines.files.FilesPipeline.get_media_requests>` for more information (:issue:`2893`, :issue:`4486`)
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When using :ref:`Google Cloud Storage <media-pipeline-gcs>` for a :ref:`media pipeline <topics-media-pipeline>`, a warning is now logged if the configured credentials do not grant the required permissions (:issue:`4346`, :issue:`4508`)
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:ref:`Link extractors <topics-link-extractors>` are now serializable, as long as you do not use :ref:`lambdas <lambda>` for parameters; for example, you can now pass link extractors in :attr:`.Request.cb_kwargs` or :attr:`.Request.meta` when :ref:`persisting scheduled requests <topics-jobs>` (:issue:`4554`)
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Upgraded the :ref:`pickle protocol <pickle-protocols>` that Scrapy uses from protocol 2 to protocol 4, improving serialization capabilities and performance (:issue:`4135`, :issue:`4541`)
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:func:`scrapy.utils.misc.create_instance` now raises a :exc:`TypeError` exception if the resulting instance is None (:issue:`4528`, :issue:`4532`)
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Bug fixes
:class:`~scrapy.downloadermiddlewares.cookies.CookiesMiddleware` no longer discards cookies defined in :attr:`Request.headers <scrapy.Request.headers>` (:issue:`1992`, :issue:`2400`)
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:class:`~scrapy.downloadermiddlewares.cookies.CookiesMiddleware` no longer re-encodes cookies defined as :class:`bytes` in the cookies parameter of the __init__ method of :class:`~scrapy.Request` (:issue:`2400`, :issue:`3575`)
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When :setting:`FEEDS` defines multiple URIs, :setting:`FEED_STORE_EMPTY` is False and the crawl yields no items, Scrapy no longer stops feed exports after the first URI (:issue:`4621`, :issue:`4626`)
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:class:`~scrapy.spiders.Spider` callbacks defined using :doc:`coroutine syntax <topics/coroutines>` no longer need to return an iterable, and may instead return a :class:`~scrapy.Request` object, an :ref:`item <topics-items>`, or None (:issue:`4609`)
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The :command:`startproject` command now ensures that the generated project folders and files have the right permissions (:issue:`4604`)
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Fix a :exc:`KeyError` exception being sometimes raised from :class:`scrapy.utils.datatypes.LocalWeakReferencedCache` (:issue:`4597`, :issue:`4599`)
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When :setting:`FEEDS` defines multiple URIs, log messages about items being stored now contain information from the corresponding feed, instead of always containing information about only one of the feeds (:issue:`4619`, :issue:`4629`)
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Documentation
Added a new section about :ref:`accessing cb_kwargs from errbacks <errback-cb_kwargs>` (:issue:`4598`, :issue:`4634`)
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Covered chompjs in :ref:`topics-parsing-javascript` (:issue:`4556`, :issue:`4562`)
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Removed from :doc:`topics/coroutines` the warning about the API being experimental (:issue:`4511`, :issue:`4513`)
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Removed references to unsupported versions of :doc:`Twisted <twisted:index>` (:issue:`4533`)
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Updated the description of the :ref:`screenshot pipeline example <ScreenshotPipeline>`, which now uses :doc:`coroutine syntax <topics/coroutines>` instead of returning a :class:`~twisted.internet.defer.Deferred` (:issue:`4514`, :issue:`4593`)
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Removed a misleading import line from the :func:`scrapy.utils.log.configure_logging` code example (:issue:`4510`, :issue:`4587`)
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The display-on-hover behavior of internal documentation references now also covers links to :ref:`commands <topics-commands>`, :attr:`.Request.meta` keys, :ref:`settings <topics-settings>` and :ref:`signals <topics-signals>` (:issue:`4495`, :issue:`4563`)
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It is again possible to download the documentation for offline reading (:issue:`4578`, :issue:`4585`)
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Removed backslashes preceding *args and **kwargs in some function and method signatures (:issue:`4592`, :issue:`4596`)
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Quality assurance
Adjusted the code base further to our :ref:`style guidelines <coding-style>` (:issue:`4237`, :issue:`4525`, :issue:`4538`, :issue:`4539`, :issue:`4540`, :issue:`4542`, :issue:`4543`, :issue:`4544`, :issue:`4545`, :issue:`4557`, :issue:`4558`, :issue:`4566`, :issue:`4568`, :issue:`4572`)
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Removed remnants of Python 2 support (:issue:`4550`, :issue:`4553`, :issue:`4568`)
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Improved code sharing between the :command:`crawl` and :command:`runspider` commands (:issue:`4548`, :issue:`4552`)
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Replaced chain(*iterable) with chain.from_iterable(iterable) (:issue:`4635`)
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You may now run the :mod:`asyncio` tests with Tox on any Python version (:issue:`4521`)
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Updated test requirements to reflect an incompatibility with pytest 5.4 and 5.4.1 (:issue:`4588`)
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Improved :class:`~scrapy.spiderloader.SpiderLoader` test coverage for scenarios involving duplicate spider names (:issue:`4549`, :issue:`4560`)
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Configured Travis CI to also run the tests with Python 3.5.2 (:issue:`4518`, :issue:`4615`)
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Added a Pylint job to Travis CI (:issue:`3727`)
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Added a Mypy job to Travis CI (:issue:`4637`)
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Made use of set literals in tests (:issue:`4573`)
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Cleaned up the Travis CI configuration (:issue:`4517`, :issue:`4519`, :issue:`4522`, :issue:`4537`)
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Scrapy 2.1.0 (2020-04-24)
Highlights:
New :setting:`FEEDS` setting to export to multiple feeds
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New :attr:`Response.ip_address <scrapy.http.Response.ip_address>` attribute
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Backward-incompatible changes
:exc:`AssertionError` exceptions triggered by :ref:`assert <assert>` statements have been replaced by new exception types, to support running Python in optimized mode (see :option:`-O`) without changing Scrapy’s behavior in any unexpected ways.
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If you catch an :exc:`AssertionError` exception from Scrapy, update your code to catch the corresponding new exception.
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Deprecation removals
The LOG_UNSERIALIZABLE_REQUESTS setting is no longer supported, use :setting:`SCHEDULER_DEBUG` instead (:issue:`4385`)
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The REDIRECT_MAX_METAREFRESH_DELAY setting is no longer supported, use :setting:`METAREFRESH_MAXDELAY` instead (:issue:`4385`)
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The :class:`~scrapy.downloadermiddlewares.chunked.ChunkedTransferMiddleware` middleware has been removed, including the entire :class:`scrapy.downloadermiddlewares.chunked` module; chunked transfers work out of the box (:issue:`4431`)
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The spiders property has been removed from :class:`~scrapy.crawler.Crawler`, use :class:`CrawlerRunner.spider_loader <scrapy.crawler.CrawlerRunner.spider_loader>` or instantiate :setting:`SPIDER_LOADER_CLASS` with your settings instead (:issue:`4398`)
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The MultiValueDict, MultiValueDictKeyError, and SiteNode classes have been removed from :mod:`scrapy.utils.datatypes` (:issue:`4400`)
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Deprecations
The FEED_FORMAT and FEED_URI settings have been deprecated in favor of the new :setting:`FEEDS` setting (:issue:`1336`, :issue:`3858`, :issue:`4507`)
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New features
A new setting, :setting:`FEEDS`, allows configuring multiple output feeds with different settings each (:issue:`1336`, :issue:`3858`, :issue:`4507`)
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The :command:`crawl` and :command:`runspider` commands now support multiple -o parameters (:issue:`1336`, :issue:`3858`, :issue:`4507`)
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The :command:`crawl` and :command:`runspider` commands now support specifying an output format by appending :<format> to the output file (:issue:`1336`, :issue:`3858`, :issue:`4507`)
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The new :attr:`Response.ip_address <scrapy.http.Response.ip_address>` attribute gives access to the IP address that originated a response (:issue:`3903`, :issue:`3940`)
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A warning is now issued when a value in :attr:`~scrapy.spiders.Spider.allowed_domains` includes a port (:issue:`50`, :issue:`3198`, :issue:`4413`)
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Zsh completion now excludes used option aliases from the completion list (:issue:`4438`)
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Bug fixes
:ref:`Request serialization <request-serialization>` no longer breaks for callbacks that are spider attributes which are assigned a function with a different name (:issue:`4500`)
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None values in :attr:`~scrapy.spiders.Spider.allowed_domains` no longer cause a :exc:`TypeError` exception (:issue:`4410`)
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Zsh completion no longer allows options after arguments (:issue:`4438`)
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zope.interface 5.0.0 and later versions are now supported (:issue:`4447`, :issue:`4448`)
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Spider.make_requests_from_url, deprecated in Scrapy 1.4.0, now issues a warning when used (:issue:`4412`)
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Documentation
Improved the documentation about signals that allow their handlers to return a :class:`~twisted.internet.defer.Deferred` (:issue:`4295`, :issue:`4390`)
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Our PyPI entry now includes links for our documentation, our source code repository and our issue tracker (:issue:`4456`)
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Covered the curl2scrapy service in the documentation (:issue:`4206`, :issue:`4455`)
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Removed references to the Guppy library, which only works in Python 2 (:issue:`4285`, :issue:`4343`)
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Extended use of InterSphinx to link to Python 3 documentation (:issue:`4444`, :issue:`4445`)
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Added support for Sphinx 3.0 and later (:issue:`4475`, :issue:`4480`, :issue:`4496`, :issue:`4503`)
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Quality assurance
Removed warnings about using old, removed settings (:issue:`4404`)
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Removed a warning about importing :class:`~twisted.internet.testing.StringTransport` from twisted.test.proto_helpers in Twisted 19.7.0 or newer (:issue:`4409`)
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Removed outdated Debian package build files (:issue:`4384`)
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Removed :class:`object` usage as a base class (:issue:`4430`)
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Removed code that added support for old versions of Twisted that we no longer support (:issue:`4472`)
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Fixed code style issues (:issue:`4468`, :issue:`4469`, :issue:`4471`, :issue:`4481`)
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Removed :func:`twisted.internet.defer.returnValue` calls (:issue:`4443`, :issue:`4446`, :issue:`4489`)
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Scrapy 2.0.1 (2020-03-18)
:meth:`Response.follow_all <scrapy.http.Response.follow_all>` now supports an empty URL iterable as input (:issue:`4408`, :issue:`4420`)
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Removed top-level :mod:`~twisted.internet.reactor` imports to prevent errors about the wrong Twisted reactor being installed when setting a different Twisted reactor using :setting:`TWISTED_REACTOR` (:issue:`4401`, :issue:`4406`)
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Fixed tests (:issue:`4422`)
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Scrapy 2.0.0 (2020-03-03)
Highlights:
Python 2 support has been removed
:doc:`Partial <topics/coroutines>` :ref:`coroutine syntax <async>` support and :doc:`experimental <topics/asyncio>` :mod:`asyncio` support
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New :meth:`Response.follow_all <scrapy.http.Response.follow_all>` method
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:ref:`FTP support <media-pipeline-ftp>` for media pipelines
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New :attr:`Response.certificate <scrapy.http.Response.certificate>` attribute
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IPv6 support through DNS_RESOLVER
Backward-incompatible changes
Python 2 support has been removed, following Python 2 end-of-life on January 1, 2020 (:issue:`4091`, :issue:`4114`, :issue:`4115`, :issue:`4121`, :issue:`4138`, :issue:`4231`, :issue:`4242`, :issue:`4304`, :issue:`4309`, :issue:`4373`)
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Retry gaveups (see :setting:`RETRY_TIMES`) are now logged as errors instead of as debug information (:issue:`3171`, :issue:`3566`)
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File extensions that :class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` ignores by default now also include 7z, 7zip, apk, bz2, cdr, dmg, ico, iso, tar, tar.gz, webm, and xz (:issue:`1837`, :issue:`2067`, :issue:`4066`)
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The :setting:`METAREFRESH_IGNORE_TAGS` setting is now an empty list by default, following web browser behavior (:issue:`3844`, :issue:`4311`)
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The :class:`~scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware` now includes spaces after commas in the value of the Accept-Encoding header that it sets, following web browser behavior (:issue:`4293`)
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The __init__ method of custom download handlers (see :setting:`DOWNLOAD_HANDLERS`) or subclasses of the following downloader handlers no longer receives a settings parameter:
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:class:`scrapy.core.downloader.handlers.datauri.DataURIDownloadHandler`
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:class:`scrapy.core.downloader.handlers.file.FileDownloadHandler`
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Use the from_settings or from_crawler class methods to expose such a parameter to your custom download handlers.
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We have refactored the :class:`scrapy.core.scheduler.Scheduler` class and related queue classes (see :setting:`SCHEDULER_PRIORITY_QUEUE`, :setting:`SCHEDULER_DISK_QUEUE` and :setting:`SCHEDULER_MEMORY_QUEUE`) to make it easier to implement custom scheduler queue classes. See :ref:`2-0-0-scheduler-queue-changes` below for details.
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Overridden settings are now logged in a different format. This is more in line with similar information logged at startup (:issue:`4199`)
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Deprecation removals
The :ref:`Scrapy shell <topics-shell>` no longer provides a sel proxy object, use :meth:`response.selector <scrapy.http.TextResponse.selector>` instead (:issue:`4347`)
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LevelDB support has been removed (:issue:`4112`)
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The following functions have been removed from :mod:`scrapy.utils.python`: isbinarytext, is_writable, setattr_default, stringify_dict (:issue:`4362`)
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Deprecations
Using environment variables prefixed with SCRAPY_ to override settings is deprecated (:issue:`4300`, :issue:`4374`, :issue:`4375`)
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:class:`scrapy.linkextractors.FilteringLinkExtractor` is deprecated, use :class:`scrapy.linkextractors.LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` instead (:issue:`4045`)
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The noconnect query string argument of proxy URLs is deprecated and should be removed from proxy URLs (:issue:`4198`)
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The :meth:`next <scrapy.utils.python.MutableChain.next>` method of :class:`scrapy.utils.python.MutableChain` is deprecated, use the global :func:`next` function or :meth:`MutableChain.__next__ <scrapy.utils.python.MutableChain.__next__>` instead (:issue:`4153`)
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New features
Added :doc:`partial support <topics/coroutines>` for Python’s :ref:`coroutine syntax <async>` and :doc:`experimental support <topics/asyncio>` for :mod:`asyncio` and :mod:`asyncio`-powered libraries (:issue:`4010`, :issue:`4259`, :issue:`4269`, :issue:`4270`, :issue:`4271`, :issue:`4316`, :issue:`4318`)
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The new :meth:`Response.follow_all <scrapy.http.Response.follow_all>` method offers the same functionality as :meth:`Response.follow <scrapy.http.Response.follow>` but supports an iterable of URLs as input and returns an iterable of requests (:issue:`2582`, :issue:`4057`, :issue:`4286`)
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:ref:`Media pipelines <topics-media-pipeline>` now support :ref:`FTP storage <media-pipeline-ftp>` (:issue:`3928`, :issue:`3961`)
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The new :attr:`Response.certificate <scrapy.http.Response.certificate>` attribute exposes the SSL certificate of the server as a :class:`twisted.internet.ssl.Certificate` object for HTTPS responses (:issue:`2726`, :issue:`4054`)
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A new DNS_RESOLVER setting allows enabling IPv6 support (:issue:`1031`, :issue:`4227`)
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A new :setting:`SCRAPER_SLOT_MAX_ACTIVE_SIZE` setting allows configuring the existing soft limit that pauses request downloads when the total response data being processed is too high (:issue:`1410`, :issue:`3551`)
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A new :setting:`TWISTED_REACTOR` setting allows customizing the :mod:`~twisted.internet.reactor` that Scrapy uses, allowing to :doc:`enable asyncio support <topics/asyncio>` or deal with a :ref:`common macOS issue <faq-specific-reactor>` (:issue:`2905`, :issue:`4294`)
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Scheduler disk and memory queues may now use the class methods from_crawler or from_settings (:issue:`3884`)
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The new :attr:`Response.cb_kwargs <scrapy.http.Response.cb_kwargs>` attribute serves as a shortcut for :attr:`Response.request.cb_kwargs <scrapy.Request.cb_kwargs>` (:issue:`4331`)
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:meth:`Response.follow <scrapy.http.Response.follow>` now supports a flags parameter, for consistency with :class:`~scrapy.Request` (:issue:`4277`, :issue:`4279`)
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:ref:`Item loader processors <topics-loaders-processors>` can now be regular functions, they no longer need to be methods (:issue:`3899`)
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:class:`~scrapy.spiders.Rule` now accepts an errback parameter (:issue:`4000`)
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:class:`~scrapy.Request` no longer requires a callback parameter when an errback parameter is specified (:issue:`3586`, :issue:`4008`)
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:class:`~scrapy.logformatter.LogFormatter` now supports some additional methods:
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:class:`~scrapy.logformatter.LogFormatter.download_error` for download errors
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:class:`~scrapy.logformatter.LogFormatter.item_error` for exceptions raised during item processing by :ref:`item pipelines <topics-item-pipeline>`
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:class:`~scrapy.logformatter.LogFormatter.spider_error` for exceptions raised from :ref:`spider callbacks <topics-spiders>`
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(:issue:`374`, :issue:`3986`, :issue:`3989`, :issue:`4176`, :issue:`4188`)
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The :setting:`FEED_URI` setting now supports :class:`pathlib.Path` values (:issue:`3731`, :issue:`4074`)
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A new :signal:`request_left_downloader` signal is sent when a request leaves the downloader (:issue:`4303`)
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Scrapy logs a warning when it detects a request callback or errback that uses yield but also returns a value, since the returned value would be lost (:issue:`3484`, :issue:`3869`)
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:class:`~scrapy.spiders.Spider` objects now raise an :exc:`AttributeError` exception if they do not have a :class:`~scrapy.spiders.Spider.start_urls` attribute nor reimplement scrapy.spiders.Spider.start_requests(), but have a start_url attribute (:issue:`4133`, :issue:`4170`)
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:class:`~scrapy.exporters.BaseItemExporter` subclasses may now use super().__init__(**kwargs) instead of self._configure(kwargs) in their __init__ method, passing dont_fail=True to the parent __init__ method if needed, and accessing kwargs at self._kwargs after calling their parent __init__ method (:issue:`4193`, :issue:`4370`)
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A new keep_fragments parameter of scrapy.utils.request.request_fingerprint allows to generate different fingerprints for requests with different fragments in their URL (:issue:`4104`)
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Download handlers (see :setting:`DOWNLOAD_HANDLERS`) may now use the from_settings and from_crawler class methods that other Scrapy components already supported (:issue:`4126`)
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:class:`scrapy.utils.python.MutableChain.__iter__` now returns self, allowing it to be used as a sequence. (:issue:`4153`)
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Bug fixes
The :command:`crawl` command now also exits with exit code 1 when an exception happens before the crawling starts (:issue:`4175`, :issue:`4207`)
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:class:`LinkExtractor.extract_links <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor.extract_links>` no longer re-encodes the query string or URLs from non-UTF-8 responses in UTF-8 (:issue:`998`, :issue:`1403`, :issue:`1949`, :issue:`4321`)
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The first spider middleware (see :setting:`SPIDER_MIDDLEWARES`) now also processes exceptions raised from callbacks that are generators (:issue:`4260`, :issue:`4272`)
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Redirects to URLs starting with 3 slashes (///) are now supported (:issue:`4032`, :issue:`4042`)
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:class:`~scrapy.Request` no longer accepts strings as url simply because they have a colon (:issue:`2552`, :issue:`4094`)
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The correct encoding is now used for attach names in :class:`~scrapy.mail.MailSender` (:issue:`4229`, :issue:`4239`)
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:class:`~scrapy.dupefilters.RFPDupeFilter`, the default :setting:`DUPEFILTER_CLASS`, no longer writes an extra \r character on each line in Windows, which made the size of the requests.seen file unnecessarily large on that platform (:issue:`4283`)
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Z shell auto-completion now looks for .html files, not .http files, and covers the -h command-line switch (:issue:`4122`, :issue:`4291`)
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Adding items to a :class:`scrapy.utils.datatypes.LocalCache` object without a limit defined no longer raises a :exc:`TypeError` exception (:issue:`4123`)
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Fixed a typo in the message of the :exc:`ValueError` exception raised when :func:`scrapy.utils.misc.create_instance` gets both settings and crawler set to None (:issue:`4128`)
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Documentation
API documentation now links to an online, syntax-highlighted view of the corresponding source code (:issue:`4148`)
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Links to unexisting documentation pages now allow access to the sidebar (:issue:`4152`, :issue:`4169`)
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Cross-references within our documentation now display a tooltip when hovered (:issue:`4173`, :issue:`4183`)
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Improved the documentation about :meth:`LinkExtractor.extract_links <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor.extract_links>` and simplified :ref:`topics-link-extractors` (:issue:`4045`)
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Clarified how :class:`ItemLoader.item <scrapy.loader.ItemLoader.item>` works (:issue:`3574`, :issue:`4099`)
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Clarified that :func:`logging.basicConfig` should not be used when also using :class:`~scrapy.crawler.CrawlerProcess` (:issue:`2149`, :issue:`2352`, :issue:`3146`, :issue:`3960`)
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Clarified the requirements for :class:`~scrapy.Request` objects :ref:`when using persistence <request-serialization>` (:issue:`4124`, :issue:`4139`)
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Clarified how to install a :ref:`custom image pipeline <media-pipeline-example>` (:issue:`4034`, :issue:`4252`)
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Fixed the signatures of the file_path method in :ref:`media pipeline <topics-media-pipeline>` examples (:issue:`4290`)
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Covered a backward-incompatible change in Scrapy 1.7.0 affecting custom :class:`scrapy.core.scheduler.Scheduler` subclasses (:issue:`4274`)
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Improved the README.rst and CODE_OF_CONDUCT.md files (:issue:`4059`)
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Documentation examples are now checked as part of our test suite and we have fixed some of the issues detected (:issue:`4142`, :issue:`4146`, :issue:`4171`, :issue:`4184`, :issue:`4190`)
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Fixed logic issues, broken links and typos (:issue:`4247`, :issue:`4258`, :issue:`4282`, :issue:`4288`, :issue:`4305`, :issue:`4308`, :issue:`4323`, :issue:`4338`, :issue:`4359`, :issue:`4361`)
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Improved consistency when referring to the __init__ method of an object (:issue:`4086`, :issue:`4088`)
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Fixed an inconsistency between code and output in :ref:`intro-overview` (:issue:`4213`)
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Extended :mod:`~sphinx.ext.intersphinx` usage (:issue:`4147`, :issue:`4172`, :issue:`4185`, :issue:`4194`, :issue:`4197`)
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We now use a recent version of Python to build the documentation (:issue:`4140`, :issue:`4249`)
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Cleaned up documentation (:issue:`4143`, :issue:`4275`)
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Quality assurance
Re-enabled proxy CONNECT tests (:issue:`2545`, :issue:`4114`)
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Added Bandit security checks to our test suite (:issue:`4162`, :issue:`4181`)
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Added Flake8 style checks to our test suite and applied many of the corresponding changes (:issue:`3944`, :issue:`3945`, :issue:`4137`, :issue:`4157`, :issue:`4167`, :issue:`4174`, :issue:`4186`, :issue:`4195`, :issue:`4238`, :issue:`4246`, :issue:`4355`, :issue:`4360`, :issue:`4365`)
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Improved test coverage (:issue:`4097`, :issue:`4218`, :issue:`4236`)
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Started reporting slowest tests, and improved the performance of some of them (:issue:`4163`, :issue:`4164`)
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Fixed broken tests and refactored some tests (:issue:`4014`, :issue:`4095`, :issue:`4244`, :issue:`4268`, :issue:`4372`)
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Modified the :doc:`tox <tox:index>` configuration to allow running tests with any Python version, run Bandit and Flake8 tests by default, and enforce a minimum tox version programmatically (:issue:`4179`)
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Cleaned up code (:issue:`3937`, :issue:`4208`, :issue:`4209`, :issue:`4210`, :issue:`4212`, :issue:`4369`, :issue:`4376`, :issue:`4378`)
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Changes to scheduler queue classes
The following changes may impact any custom queue classes of all types:
The push method no longer receives a second positional parameter containing request.priority * -1. If you need that value, get it from the first positional parameter, request, instead, or use the new :meth:`~scrapy.core.scheduler.ScrapyPriorityQueue.priority` method in :class:`scrapy.core.scheduler.ScrapyPriorityQueue` subclasses.
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The following changes may impact custom priority queue classes:
In the __init__ method or the from_crawler or from_settings class methods:
The parameter that used to contain a factory function, qfactory, is now passed as a keyword parameter named downstream_queue_cls.
A new keyword parameter has been added: key. It is a string that is always an empty string for memory queues and indicates the :setting:`JOB_DIR` value for disk queues.
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The parameter for disk queues that contains data from the previous crawl, startprios or slot_startprios, is now passed as a keyword parameter named startprios.
The serialize parameter is no longer passed. The disk queue class must take care of request serialization on its own before writing to disk, using the :func:`~scrapy.utils.reqser.request_to_dict` and :func:`~scrapy.utils.reqser.request_from_dict` functions from the :mod:`scrapy.utils.reqser` module.
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The following changes may impact custom disk and memory queue classes:
- The signature of the __init__ method is now __init__(self, crawler, key).
The following changes affect specifically the :class:`~scrapy.core.scheduler.ScrapyPriorityQueue` and :class:`~scrapy.core.scheduler.DownloaderAwarePriorityQueue` classes from :mod:`scrapy.core.scheduler` and may affect subclasses:
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Unknown interpreted text role "mod".In the __init__ method, most of the changes described above apply.
__init__ may still receive all parameters as positional parameters, however:
downstream_queue_cls, which replaced qfactory, must be instantiated differently.
qfactory was instantiated with a priority value (integer).
Instances of downstream_queue_cls should be created using the new :meth:`ScrapyPriorityQueue.qfactory <scrapy.core.scheduler.ScrapyPriorityQueue.qfactory>` or :meth:`DownloaderAwarePriorityQueue.pqfactory <scrapy.core.scheduler.DownloaderAwarePriorityQueue.pqfactory>` methods.
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The new key parameter displaced the startprios parameter 1 position to the right.
The following class attributes have been added:
:attr:`~scrapy.core.scheduler.ScrapyPriorityQueue.crawler`
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:attr:`~scrapy.core.scheduler.ScrapyPriorityQueue.downstream_queue_cls` (details above)
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:attr:`~scrapy.core.scheduler.ScrapyPriorityQueue.key` (details above)
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The serialize attribute has been removed (details above)
The following changes affect specifically the :class:`~scrapy.core.scheduler.ScrapyPriorityQueue` class and may affect subclasses:
System Message: ERROR/3 (<stdin>, line 6103); backlink
Unknown interpreted text role "class".A new :meth:`~scrapy.core.scheduler.ScrapyPriorityQueue.priority` method has been added which, given a request, returns request.priority * -1.
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It is used in :meth:`~scrapy.core.scheduler.ScrapyPriorityQueue.push` to make up for the removal of its priority parameter.
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The spider attribute has been removed. Use :attr:`crawler.spider <scrapy.core.scheduler.ScrapyPriorityQueue.crawler>` instead.
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The following changes affect specifically the :class:`~scrapy.core.scheduler.DownloaderAwarePriorityQueue` class and may affect subclasses:
System Message: ERROR/3 (<stdin>, line 6118); backlink
Unknown interpreted text role "class".A new :attr:`~scrapy.core.scheduler.DownloaderAwarePriorityQueue.pqueues` attribute offers a mapping of downloader slot names to the corresponding instances of :attr:`~scrapy.core.scheduler.DownloaderAwarePriorityQueue.downstream_queue_cls`.
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System Message: ERROR/3 (<stdin>, line 6127); backlink
Unknown interpreted text role "issue".Scrapy 1.8.4 (2024-02-14)
Security bug fixes:
Due to its ReDoS vulnerabilities, scrapy.utils.iterators.xmliter is now deprecated in favor of :func:`~scrapy.utils.iterators.xmliter_lxml`, which :class:`~scrapy.spiders.XMLFeedSpider` now uses.
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To minimize the impact of this change on existing code, :func:`~scrapy.utils.iterators.xmliter_lxml` now supports indicating the node namespace as a prefix in the node name, and big files with highly nested trees when using libxml2 2.7+.
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Please, see the cc65-xxvf-f7r9 security advisory for more information.
:setting:`DOWNLOAD_MAXSIZE` and :setting:`DOWNLOAD_WARNSIZE` now also apply to the decompressed response body. Please, see the 7j7m-v7m3-jqm7 security advisory for more information.
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Also in relation with the 7j7m-v7m3-jqm7 security advisory, use of the scrapy.downloadermiddlewares.decompression module is discouraged and will trigger a warning.
The Authorization header is now dropped on redirects to a different domain. Please, see the cw9j-q3vf-hrrv security advisory for more information.
Scrapy 1.8.3 (2022-07-25)
Security bug fix:
When :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` processes a request with :reqmeta:`proxy` metadata, and that :reqmeta:`proxy` metadata includes proxy credentials, :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` sets the Proxy-Authorization header, but only if that header is not already set.
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There are third-party proxy-rotation downloader middlewares that set different :reqmeta:`proxy` metadata every time they process a request.
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Because of request retries and redirects, the same request can be processed by downloader middlewares more than once, including both :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` and any third-party proxy-rotation downloader middleware.
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These third-party proxy-rotation downloader middlewares could change the :reqmeta:`proxy` metadata of a request to a new value, but fail to remove the Proxy-Authorization header from the previous value of the :reqmeta:`proxy` metadata, causing the credentials of one proxy to be sent to a different proxy.
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To prevent the unintended leaking of proxy credentials, the behavior of :class:`~scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware` is now as follows when processing a request:
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If the request being processed defines :reqmeta:`proxy` metadata that includes credentials, the Proxy-Authorization header is always updated to feature those credentials.
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If the request being processed defines :reqmeta:`proxy` metadata without credentials, the Proxy-Authorization header is removed unless it was originally defined for the same proxy URL.
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To remove proxy credentials while keeping the same proxy URL, remove the Proxy-Authorization header.
If the request has no :reqmeta:`proxy` metadata, or that metadata is a falsy value (e.g. None), the Proxy-Authorization header is removed.
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It is no longer possible to set a proxy URL through the :reqmeta:`proxy` metadata but set the credentials through the Proxy-Authorization header. Set proxy credentials through the :reqmeta:`proxy` metadata instead.
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Scrapy 1.8.2 (2022-03-01)
Security bug fixes:
When a :class:`~scrapy.Request` object with cookies defined gets a redirect response causing a new :class:`~scrapy.Request` object to be scheduled, the cookies defined in the original :class:`~scrapy.Request` object are no longer copied into the new :class:`~scrapy.Request` object.
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If you manually set the Cookie header on a :class:`~scrapy.Request` object and the domain name of the redirect URL is not an exact match for the domain of the URL of the original :class:`~scrapy.Request` object, your Cookie header is now dropped from the new :class:`~scrapy.Request` object.
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The old behavior could be exploited by an attacker to gain access to your cookies. Please, see the cjvr-mfj7-j4j8 security advisory for more information.
Note
It is still possible to enable the sharing of cookies between different domains with a shared domain suffix (e.g. example.com and any subdomain) by defining the shared domain suffix (e.g. example.com) as the cookie domain when defining your cookies. See the documentation of the :class:`~scrapy.Request` class for more information.
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When the domain of a cookie, either received in the Set-Cookie header of a response or defined in a :class:`~scrapy.Request` object, is set to a public suffix, the cookie is now ignored unless the cookie domain is the same as the request domain.
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The old behavior could be exploited by an attacker to inject cookies into your requests to some other domains. Please, see the mfjm-vh54-3f96 security advisory for more information.
Scrapy 1.8.1 (2021-10-05)
Security bug fix:
If you use :class:`~scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware` (i.e. the http_user and http_pass spider attributes) for HTTP authentication, any request exposes your credentials to the request target.
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To prevent unintended exposure of authentication credentials to unintended domains, you must now additionally set a new, additional spider attribute, http_auth_domain, and point it to the specific domain to which the authentication credentials must be sent.
If the http_auth_domain spider attribute is not set, the domain of the first request will be considered the HTTP authentication target, and authentication credentials will only be sent in requests targeting that domain.
If you need to send the same HTTP authentication credentials to multiple domains, you can use :func:`w3lib.http.basic_auth_header` instead to set the value of the Authorization header of your requests.
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If you really want your spider to send the same HTTP authentication credentials to any domain, set the http_auth_domain spider attribute to None.
Finally, if you are a user of scrapy-splash, know that this version of Scrapy breaks compatibility with scrapy-splash 0.7.2 and earlier. You will need to upgrade scrapy-splash to a greater version for it to continue to work.
Scrapy 1.8.0 (2019-10-28)
Highlights:
Dropped Python 3.4 support and updated minimum requirements; made Python 3.8 support official
New :meth:`.Request.from_curl` class method
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New :setting:`ROBOTSTXT_PARSER` and :setting:`ROBOTSTXT_USER_AGENT` settings
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New :setting:`DOWNLOADER_CLIENT_TLS_CIPHERS` and :setting:`DOWNLOADER_CLIENT_TLS_VERBOSE_LOGGING` settings
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Backward-incompatible changes
Python 3.4 is no longer supported, and some of the minimum requirements of Scrapy have also changed:
:doc:`cssselect <cssselect:index>` 0.9.1
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cryptography 2.0
lxml 3.5.0
pyOpenSSL 16.2.0
queuelib 1.4.2
service_identity 16.0.0
six 1.10.0
Twisted 17.9.0 (16.0.0 with Python 2)
zope.interface 4.1.3
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JSONRequest is now called :class:`~scrapy.http.JsonRequest` for consistency with similar classes (:issue:`3929`, :issue:`3982`)
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If you are using a custom context factory (DOWNLOADER_CLIENTCONTEXTFACTORY), its __init__ method must accept two new parameters: tls_verbose_logging and tls_ciphers (:issue:`2111`, :issue:`3392`, :issue:`3442`, :issue:`3450`)
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:class:`~scrapy.loader.ItemLoader` now turns the values of its input item into lists:
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.. code-block:: pycon >>> item = MyItem() >>> item["field"] = "value1" >>> loader = ItemLoader(item=item) >>> item["field"] ['value1']This is needed to allow adding values to existing fields (loader.add_value('field', 'value2')).
(:issue:`3804`, :issue:`3819`, :issue:`3897`, :issue:`3976`, :issue:`3998`, :issue:`4036`)
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See also :ref:`1.8-deprecation-removals` below.
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A new :meth:`Request.from_curl <scrapy.Request.from_curl>` class method allows :ref:`creating a request from a cURL command <requests-from-curl>` (:issue:`2985`, :issue:`3862`)
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A new :setting:`ROBOTSTXT_PARSER` setting allows choosing which robots.txt parser to use. It includes built-in support for :ref:`RobotFileParser <python-robotfileparser>`, :ref:`Protego <protego-parser>` (default), Reppy, and :ref:`Robotexclusionrulesparser <rerp-parser>`, and allows you to :ref:`implement support for additional parsers <support-for-new-robots-parser>` (:issue:`754`, :issue:`2669`, :issue:`3796`, :issue:`3935`, :issue:`3969`, :issue:`4006`)
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A new :setting:`ROBOTSTXT_USER_AGENT` setting allows defining a separate user agent string to use for robots.txt parsing (:issue:`3931`, :issue:`3966`)
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:class:`~scrapy.spiders.Rule` no longer requires a :class:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` parameter (:issue:`781`, :issue:`4016`)
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Use the new :setting:`DOWNLOADER_CLIENT_TLS_CIPHERS` setting to customize the TLS/SSL ciphers used by the default HTTP/1.1 downloader (:issue:`3392`, :issue:`3442`)
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Set the new :setting:`DOWNLOADER_CLIENT_TLS_VERBOSE_LOGGING` setting to True to enable debug-level messages about TLS connection parameters after establishing HTTPS connections (:issue:`2111`, :issue:`3450`)
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Callbacks that receive keyword arguments (see :attr:`.Request.cb_kwargs`) can now be tested using the new :class:`@cb_kwargs <scrapy.contracts.default.CallbackKeywordArgumentsContract>` :ref:`spider contract <topics-contracts>` (:issue:`3985`, :issue:`3988`)
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When a :class:`@scrapes <scrapy.contracts.default.ScrapesContract>` spider contract fails, all missing fields are now reported (:issue:`766`, :issue:`3939`)
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:ref:`Custom log formats <custom-log-formats>` can now drop messages by having the corresponding methods of the configured :setting:`LOG_FORMATTER` return None (:issue:`3984`, :issue:`3987`)
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A much improved completion definition is now available for Zsh (:issue:`4069`)
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Bug fixes
:meth:`ItemLoader.load_item() <scrapy.loader.ItemLoader.load_item>` no longer makes later calls to :meth:`ItemLoader.get_output_value() <scrapy.loader.ItemLoader.get_output_value>` or :meth:`ItemLoader.load_item() <scrapy.loader.ItemLoader.load_item>` return empty data (:issue:`3804`, :issue:`3819`, :issue:`3897`, :issue:`3976`, :issue:`3998`, :issue:`4036`)
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Fixed :class:`~scrapy.statscollectors.DummyStatsCollector` raising a :exc:`TypeError` exception (:issue:`4007`, :issue:`4052`)
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:meth:`FilesPipeline.file_path <scrapy.pipelines.files.FilesPipeline.file_path>` and :meth:`ImagesPipeline.file_path <scrapy.pipelines.images.ImagesPipeline.file_path>` no longer choose file extensions that are not registered with IANA (:issue:`1287`, :issue:`3953`, :issue:`3954`)
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When using botocore to persist files in S3, all botocore-supported headers are properly mapped now (:issue:`3904`, :issue:`3905`)
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FTP passwords in :setting:`FEED_URI` containing percent-escaped characters are now properly decoded (:issue:`3941`)
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A memory-handling and error-handling issue in :func:`scrapy.utils.ssl.get_temp_key_info` has been fixed (:issue:`3920`)
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Documentation
The documentation now covers how to define and configure a :ref:`custom log format <custom-log-formats>` (:issue:`3616`, :issue:`3660`)
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API documentation added for :class:`~scrapy.exporters.MarshalItemExporter` and :class:`~scrapy.exporters.PythonItemExporter` (:issue:`3973`)
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API documentation added for :class:`~scrapy.item.BaseItem` and :class:`~scrapy.item.ItemMeta` (:issue:`3999`)
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Minor documentation fixes (:issue:`2998`, :issue:`3398`, :issue:`3597`, :issue:`3894`, :issue:`3934`, :issue:`3978`, :issue:`3993`, :issue:`4022`, :issue:`4028`, :issue:`4033`, :issue:`4046`, :issue:`4050`, :issue:`4055`, :issue:`4056`, :issue:`4061`, :issue:`4072`, :issue:`4071`, :issue:`4079`, :issue:`4081`, :issue:`4089`, :issue:`4093`)
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Deprecation removals
scrapy.xlib has been removed (:issue:`4015`)
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Deprecations
The LevelDB storage backend (scrapy.extensions.httpcache.LeveldbCacheStorage) of :class:`~scrapy.downloadermiddlewares.httpcache.HttpCacheMiddleware` is deprecated (:issue:`4085`, :issue:`4092`)
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Use of the undocumented SCRAPY_PICKLED_SETTINGS_TO_OVERRIDE environment variable is deprecated (:issue:`3910`)
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scrapy.item.DictItem is deprecated, use :class:`~scrapy.item.Item` instead (:issue:`3999`)
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Other changes
Minimum versions of optional Scrapy requirements that are covered by continuous integration tests have been updated:
Lower versions of these optional requirements may work, but it is not guaranteed (:issue:`3892`)
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GitHub templates for bug reports and feature requests (:issue:`3126`, :issue:`3471`, :issue:`3749`, :issue:`3754`)
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Continuous integration fixes (:issue:`3923`)
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Code cleanup (:issue:`3391`, :issue:`3907`, :issue:`3946`, :issue:`3950`, :issue:`4023`, :issue:`4031`)
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Scrapy 1.7.4 (2019-10-21)
Revert the fix for :issue:`3804` (:issue:`3819`), which has a few undesired side effects (:issue:`3897`, :issue:`3976`).
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Unknown interpreted text role "issue".As a result, when an item loader is initialized with an item, :meth:`ItemLoader.load_item() <scrapy.loader.ItemLoader.load_item>` once again makes later calls to :meth:`ItemLoader.get_output_value() <scrapy.loader.ItemLoader.get_output_value>` or :meth:`ItemLoader.load_item() <scrapy.loader.ItemLoader.load_item>` return empty data.
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Unknown interpreted text role "meth".Scrapy 1.7.3 (2019-08-01)
Enforce lxml 4.3.5 or lower for Python 3.4 (:issue:`3912`, :issue:`3918`).
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Unknown interpreted text role "issue".Scrapy 1.7.2 (2019-07-23)
Fix Python 2 support (:issue:`3889`, :issue:`3893`, :issue:`3896`).
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Unknown interpreted text role "issue".Scrapy 1.7.1 (2019-07-18)
Re-packaging of Scrapy 1.7.0, which was missing some changes in PyPI.
Scrapy 1.7.0 (2019-07-18)
Note
Make sure you install Scrapy 1.7.1. The Scrapy 1.7.0 package in PyPI is the result of an erroneous commit tagging and does not include all the changes described below.
Highlights:
- Improvements for crawls targeting multiple domains
- A cleaner way to pass arguments to callbacks
- A new class for JSON requests
- Improvements for rule-based spiders
- New features for feed exports
Backward-incompatible changes
429 is now part of the :setting:`RETRY_HTTP_CODES` setting by default
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This change is backward incompatible. If you don’t want to retry 429, you must override :setting:`RETRY_HTTP_CODES` accordingly.
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:class:`~scrapy.crawler.Crawler`, :meth:`CrawlerRunner.crawl <scrapy.crawler.CrawlerRunner.crawl>` and :meth:`CrawlerRunner.create_crawler <scrapy.crawler.CrawlerRunner.create_crawler>` no longer accept a :class:`~scrapy.spiders.Spider` subclass instance, they only accept a :class:`~scrapy.spiders.Spider` subclass now.
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:class:`~scrapy.spiders.Spider` subclass instances were never meant to work, and they were not working as one would expect: instead of using the passed :class:`~scrapy.spiders.Spider` subclass instance, their :class:`~scrapy.spiders.Spider.from_crawler` method was called to generate a new instance.
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Non-default values for the :setting:`SCHEDULER_PRIORITY_QUEUE` setting may stop working. Scheduler priority queue classes now need to handle :class:`~scrapy.Request` objects instead of arbitrary Python data structures.
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An additional crawler parameter has been added to the __init__ method of the :class:`~scrapy.core.scheduler.Scheduler` class. Custom scheduler subclasses which don't accept arbitrary parameters in their __init__ method might break because of this change.
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For more information, see :setting:`SCHEDULER`.
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See also :ref:`1.7-deprecation-removals` below.
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Unknown interpreted text role "ref".New features
A new scheduler priority queue, scrapy.pqueues.DownloaderAwarePriorityQueue, may be :ref:`enabled <broad-crawls-scheduler-priority-queue>` for a significant scheduling improvement on crawls targeting multiple web domains, at the cost of no :setting:`CONCURRENT_REQUESTS_PER_IP` support (:issue:`3520`)
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A new :attr:`.Request.cb_kwargs` attribute provides a cleaner way to pass keyword arguments to callback methods (:issue:`1138`, :issue:`3563`)
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A new :class:`JSONRequest <scrapy.http.JsonRequest>` class offers a more convenient way to build JSON requests (:issue:`3504`, :issue:`3505`)
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A process_request callback passed to the :class:`~scrapy.spiders.Rule` __init__ method now receives the :class:`~scrapy.http.Response` object that originated the request as its second argument (:issue:`3682`)
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A new restrict_text parameter for the :attr:`LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` __init__ method allows filtering links by linking text (:issue:`3622`, :issue:`3635`)
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A new :setting:`FEED_STORAGE_S3_ACL` setting allows defining a custom ACL for feeds exported to Amazon S3 (:issue:`3607`)
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A new :setting:`FEED_STORAGE_FTP_ACTIVE` setting allows using FTP’s active connection mode for feeds exported to FTP servers (:issue:`3829`)
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A new :setting:`METAREFRESH_IGNORE_TAGS` setting allows overriding which HTML tags are ignored when searching a response for HTML meta tags that trigger a redirect (:issue:`1422`, :issue:`3768`)
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A new :reqmeta:`redirect_reasons` request meta key exposes the reason (status code, meta refresh) behind every followed redirect (:issue:`3581`, :issue:`3687`)
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The SCRAPY_CHECK variable is now set to the true string during runs of the :command:`check` command, which allows :ref:`detecting contract check runs from code <detecting-contract-check-runs>` (:issue:`3704`, :issue:`3739`)
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A new :meth:`Item.deepcopy() <scrapy.item.Item.deepcopy>` method makes it easier to :ref:`deep-copy items <copying-items>` (:issue:`1493`, :issue:`3671`)
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:class:`~scrapy.extensions.corestats.CoreStats` also logs elapsed_time_seconds now (:issue:`3638`)
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Exceptions from :class:`~scrapy.loader.ItemLoader` :ref:`input and output processors <topics-loaders-processors>` are now more verbose (:issue:`3836`, :issue:`3840`)
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:class:`~scrapy.crawler.Crawler`, :class:`CrawlerRunner.crawl <scrapy.crawler.CrawlerRunner.crawl>` and :class:`CrawlerRunner.create_crawler <scrapy.crawler.CrawlerRunner.create_crawler>` now fail gracefully if they receive a :class:`~scrapy.spiders.Spider` subclass instance instead of the subclass itself (:issue:`2283`, :issue:`3610`, :issue:`3872`)
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Bug fixes
:meth:`~scrapy.spidermiddlewares.SpiderMiddleware.process_spider_exception` is now also invoked for generators (:issue:`220`, :issue:`2061`)
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System exceptions like KeyboardInterrupt are no longer caught (:issue:`3726`)
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:meth:`ItemLoader.load_item() <scrapy.loader.ItemLoader.load_item>` no longer makes later calls to :meth:`ItemLoader.get_output_value() <scrapy.loader.ItemLoader.get_output_value>` or :meth:`ItemLoader.load_item() <scrapy.loader.ItemLoader.load_item>` return empty data (:issue:`3804`, :issue:`3819`)
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The images pipeline (:class:`~scrapy.pipelines.images.ImagesPipeline`) no longer ignores these Amazon S3 settings: :setting:`AWS_ENDPOINT_URL`, :setting:`AWS_REGION_NAME`, :setting:`AWS_USE_SSL`, :setting:`AWS_VERIFY` (:issue:`3625`)
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Fixed a memory leak in scrapy.pipelines.media.MediaPipeline affecting, for example, non-200 responses and exceptions from custom middlewares (:issue:`3813`)
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Requests with private callbacks are now correctly unserialized from disk (:issue:`3790`)
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:meth:`.FormRequest.from_response` now handles invalid methods like major web browsers (:issue:`3777`, :issue:`3794`)
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Documentation
A new topic, :ref:`topics-dynamic-content`, covers recommended approaches to read dynamically-loaded data (:issue:`3703`)
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:ref:`topics-broad-crawls` now features information about memory usage (:issue:`1264`, :issue:`3866`)
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The documentation of :class:`~scrapy.spiders.Rule` now covers how to access the text of a link when using :class:`~scrapy.spiders.CrawlSpider` (:issue:`3711`, :issue:`3712`)
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A new section, :ref:`httpcache-storage-custom`, covers writing a custom cache storage backend for :class:`~scrapy.downloadermiddlewares.httpcache.HttpCacheMiddleware` (:issue:`3683`, :issue:`3692`)
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A new :ref:`FAQ <faq>` entry, :ref:`faq-split-item`, explains what to do when you want to split an item into multiple items from an item pipeline (:issue:`2240`, :issue:`3672`)
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Updated the :ref:`FAQ entry about crawl order <faq-bfo-dfo>` to explain why the first few requests rarely follow the desired order (:issue:`1739`, :issue:`3621`)
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The :setting:`LOGSTATS_INTERVAL` setting (:issue:`3730`), the :meth:`FilesPipeline.file_path <scrapy.pipelines.files.FilesPipeline.file_path>` and :meth:`ImagesPipeline.file_path <scrapy.pipelines.images.ImagesPipeline.file_path>` methods (:issue:`2253`, :issue:`3609`) and the :meth:`Crawler.stop() <scrapy.crawler.Crawler.stop>` method (:issue:`3842`) are now documented
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Some parts of the documentation that were confusing or misleading are now clearer (:issue:`1347`, :issue:`1789`, :issue:`2289`, :issue:`3069`, :issue:`3615`, :issue:`3626`, :issue:`3668`, :issue:`3670`, :issue:`3673`, :issue:`3728`, :issue:`3762`, :issue:`3861`, :issue:`3882`)
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Minor documentation fixes (:issue:`3648`, :issue:`3649`, :issue:`3662`, :issue:`3674`, :issue:`3676`, :issue:`3694`, :issue:`3724`, :issue:`3764`, :issue:`3767`, :issue:`3791`, :issue:`3797`, :issue:`3806`, :issue:`3812`)
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Deprecation removals
The following deprecated APIs have been removed (:issue:`3578`):
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From scrapy.core.downloader.handlers:
- http.HttpDownloadHandler (use http10.HTTP10DownloadHandler)
scrapy.loader.ItemLoader._get_values (use _get_xpathvalues)
scrapy.loader.XPathItemLoader (use :class:`~scrapy.loader.ItemLoader`)
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scrapy.log (see :ref:`topics-logging`)
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From scrapy.pipelines:
- files.FilesPipeline.file_key (use file_path)
- images.ImagesPipeline.file_key (use file_path)
- images.ImagesPipeline.image_key (use file_path)
- images.ImagesPipeline.thumb_key (use thumb_path)
From both scrapy.selector and scrapy.selector.lxmlsel:
HtmlXPathSelector (use :class:`~scrapy.Selector`)
System Message: ERROR/3 (<stdin>, line 6766); backlink
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XmlXPathSelector (use :class:`~scrapy.Selector`)
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XPathSelector (use :class:`~scrapy.Selector`)
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XPathSelectorList (use :class:`~scrapy.Selector`)
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From scrapy.selector.csstranslator:
- ScrapyGenericTranslator (use parsel.csstranslator.GenericTranslator)
- ScrapyHTMLTranslator (use parsel.csstranslator.HTMLTranslator)
- ScrapyXPathExpr (use parsel.csstranslator.XPathExpr)
From :class:`~scrapy.Selector`:
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- _root (both the __init__ method argument and the object property, use root)
- extract_unquoted (use getall)
- select (use xpath)
From :class:`~scrapy.selector.SelectorList`:
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- extract_unquoted (use getall)
- select (use xpath)
- x (use xpath)
scrapy.spiders.BaseSpider (use :class:`~scrapy.spiders.Spider`)
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From :class:`~scrapy.spiders.Spider` (and subclasses):
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DOWNLOAD_DELAY (use :ref:`download_delay <spider-download_delay-attribute>`)
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set_crawler (use :meth:`~scrapy.spiders.Spider.from_crawler`)
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scrapy.spiders.spiders (use :class:`~scrapy.spiderloader.SpiderLoader`)
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scrapy.telnet (use :mod:`scrapy.extensions.telnet`)
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From scrapy.utils.python:
- str_to_unicode (use to_unicode)
- unicode_to_str (use to_bytes)
scrapy.utils.response.body_or_str
The following deprecated settings have also been removed (:issue:`3578`):
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Deprecations
The queuelib.PriorityQueue value for the :setting:`SCHEDULER_PRIORITY_QUEUE` setting is deprecated. Use scrapy.pqueues.ScrapyPriorityQueue instead.
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process_request callbacks passed to :class:`~scrapy.spiders.Rule` that do not accept two arguments are deprecated.
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The following modules are deprecated:
- scrapy.utils.http (use w3lib.http)
- scrapy.utils.markup (use w3lib.html)
- scrapy.utils.multipart (use urllib3)
The scrapy.utils.datatypes.MergeDict class is deprecated for Python 3 code bases. Use :class:`~collections.ChainMap` instead. (:issue:`3878`)
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The scrapy.utils.gz.is_gzipped function is deprecated. Use scrapy.utils.gz.gzip_magic_number instead.
Other changes
It is now possible to run all tests from the same tox environment in parallel; the documentation now covers :ref:`this and other ways to run tests <running-tests>` (:issue:`3707`)
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It is now possible to generate an API documentation coverage report (:issue:`3806`, :issue:`3810`, :issue:`3860`)
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The :ref:`documentation policies <documentation-policies>` now require docstrings (:issue:`3701`) that follow PEP 257 (:issue:`3748`)
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Internal fixes and cleanup (:issue:`3629`, :issue:`3643`, :issue:`3684`, :issue:`3698`, :issue:`3734`, :issue:`3735`, :issue:`3736`, :issue:`3737`, :issue:`3809`, :issue:`3821`, :issue:`3825`, :issue:`3827`, :issue:`3833`, :issue:`3857`, :issue:`3877`)
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Scrapy 1.6.0 (2019-01-30)
Highlights:
better Windows support;
Python 3.7 compatibility;
big documentation improvements, including a switch from .extract_first() + .extract() API to .get() + .getall() API;
feed exports, FilePipeline and MediaPipeline improvements;
better extensibility: :signal:`item_error` and :signal:`request_reached_downloader` signals; from_crawler support for feed exporters, feed storages and dupefilters.
System Message: ERROR/3 (<stdin>, line 6887); backlink
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scrapy.contracts fixes and new features;
telnet console security improvements, first released as a backport in :ref:`release-1.5.2`;
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clean-up of the deprecated code;
various bug fixes, small new features and usability improvements across the codebase.
Selector API changes
While these are not changes in Scrapy itself, but rather in the parsel library which Scrapy uses for xpath/css selectors, these changes are worth mentioning here. Scrapy now depends on parsel >= 1.5, and Scrapy documentation is updated to follow recent parsel API conventions.
Most visible change is that .get() and .getall() selector methods are now preferred over .extract_first() and .extract(). We feel that these new methods result in a more concise and readable code. See :ref:`old-extraction-api` for more details.
System Message: ERROR/3 (<stdin>, line 6905); backlink
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There are currently no plans to deprecate .extract() and .extract_first() methods.
Another useful new feature is the introduction of Selector.attrib and SelectorList.attrib properties, which make it easier to get attributes of HTML elements. See :ref:`selecting-attributes`.
System Message: ERROR/3 (<stdin>, line 6914); backlink
Unknown interpreted text role "ref".CSS selectors are cached in parsel >= 1.5, which makes them faster when the same CSS path is used many times. This is very common in case of Scrapy spiders: callbacks are usually called several times, on different pages.
If you're using custom Selector or SelectorList subclasses, a backward incompatible change in parsel may affect your code. See parsel changelog for a detailed description, as well as for the full list of improvements.
Telnet console
Backward incompatible: Scrapy's telnet console now requires username and password. See :ref:`topics-telnetconsole` for more details. This change fixes a security issue; see :ref:`release-1.5.2` release notes for details.
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Unknown interpreted text role "ref".System Message: ERROR/3 (<stdin>, line 6933); backlink
Unknown interpreted text role "ref".New extensibility features
from_crawler support is added to feed exporters and feed storages. This, among other things, allows to access Scrapy settings from custom feed storages and exporters (:issue:`1605`, :issue:`3348`).
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from_crawler support is added to dupefilters (:issue:`2956`); this allows to access e.g. settings or a spider from a dupefilter.
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:signal:`item_error` is fired when an error happens in a pipeline (:issue:`3256`);
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:signal:`request_reached_downloader` is fired when Downloader gets a new Request; this signal can be useful e.g. for custom Schedulers (:issue:`3393`).
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new SitemapSpider :meth:`~.SitemapSpider.sitemap_filter` method which allows to select sitemap entries based on their attributes in SitemapSpider subclasses (:issue:`3512`).
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Lazy loading of Downloader Handlers is now optional; this enables better initialization error handling in custom Downloader Handlers (:issue:`3394`).
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New FilePipeline and MediaPipeline features
Expose more options for S3FilesStore: :setting:`AWS_ENDPOINT_URL`, :setting:`AWS_USE_SSL`, :setting:`AWS_VERIFY`, :setting:`AWS_REGION_NAME`. For example, this allows to use alternative or self-hosted AWS-compatible providers (:issue:`2609`, :issue:`3548`).
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ACL support for Google Cloud Storage: :setting:`FILES_STORE_GCS_ACL` and :setting:`IMAGES_STORE_GCS_ACL` (:issue:`3199`).
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scrapy.contracts improvements
Exceptions in contracts code are handled better (:issue:`3377`);
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dont_filter=True is used for contract requests, which allows to test different callbacks with the same URL (:issue:`3381`);
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request_cls attribute in Contract subclasses allow to use different Request classes in contracts, for example FormRequest (:issue:`3383`).
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Fixed errback handling in contracts, e.g. for cases where a contract is executed for URL which returns non-200 response (:issue:`3371`).
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Usability improvements
more stats for RobotsTxtMiddleware (:issue:`3100`)
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INFO log level is used to show telnet host/port (:issue:`3115`)
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a message is added to IgnoreRequest in RobotsTxtMiddleware (:issue:`3113`)
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better validation of url argument in Response.follow (:issue:`3131`)
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non-zero exit code is returned from Scrapy commands when error happens on spider initialization (:issue:`3226`)
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Link extraction improvements: "ftp" is added to scheme list (:issue:`3152`); "flv" is added to common video extensions (:issue:`3165`)
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better error message when an exporter is disabled (:issue:`3358`);
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scrapy shell --help mentions syntax required for local files (./file.html) - :issue:`3496`.
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Referer header value is added to RFPDupeFilter log messages (:issue:`3588`)
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Bug fixes
fixed issue with extra blank lines in .csv exports under Windows (:issue:`3039`);
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proper handling of pickling errors in Python 3 when serializing objects for disk queues (:issue:`3082`)
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flags are now preserved when copying Requests (:issue:`3342`);
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FormRequest.from_response clickdata shouldn't ignore elements with input[type=image] (:issue:`3153`).
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FormRequest.from_response should preserve duplicate keys (:issue:`3247`)
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Documentation improvements
Docs are re-written to suggest .get/.getall API instead of .extract/.extract_first. Also, :ref:`topics-selectors` docs are updated and re-structured to match latest parsel docs; they now contain more topics, such as :ref:`selecting-attributes` or :ref:`topics-selectors-css-extensions` (:issue:`3390`).
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:ref:`topics-developer-tools` is a new tutorial which replaces old Firefox and Firebug tutorials (:issue:`3400`).
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SCRAPY_PROJECT environment variable is documented (:issue:`3518`);
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troubleshooting section is added to install instructions (:issue:`3517`);
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improved links to beginner resources in the tutorial (:issue:`3367`, :issue:`3468`);
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fixed :setting:`RETRY_HTTP_CODES` default values in docs (:issue:`3335`);
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remove unused DEPTH_STATS option from docs (:issue:`3245`);
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other cleanups (:issue:`3347`, :issue:`3350`, :issue:`3445`, :issue:`3544`, :issue:`3605`).
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Deprecation removals
Compatibility shims for pre-1.0 Scrapy module names are removed (:issue:`3318`):
System Message: ERROR/3 (<stdin>, line 7027); backlink
Unknown interpreted text role "issue".- scrapy.command
- scrapy.contrib (with all submodules)
- scrapy.contrib_exp (with all submodules)
- scrapy.dupefilter
- scrapy.linkextractor
- scrapy.project
- scrapy.spider
- scrapy.spidermanager
- scrapy.squeue
- scrapy.stats
- scrapy.statscol
- scrapy.utils.decorator
See :ref:`module-relocations` for more information, or use suggestions from Scrapy 1.5.x deprecation warnings to update your code.
System Message: ERROR/3 (<stdin>, line 7043); backlink
Unknown interpreted text role "ref".Other deprecation removals:
Deprecated scrapy.interfaces.ISpiderManager is removed; please use scrapy.interfaces.ISpiderLoader.
Deprecated CrawlerSettings class is removed (:issue:`3327`).
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Deprecated Settings.overrides and Settings.defaults attributes are removed (:issue:`3327`, :issue:`3359`).
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Other improvements, cleanups
All Scrapy tests now pass on Windows; Scrapy testing suite is executed in a Windows environment on CI (:issue:`3315`).
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Python 3.7 support (:issue:`3326`, :issue:`3150`, :issue:`3547`).
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Testing and CI fixes (:issue:`3526`, :issue:`3538`, :issue:`3308`, :issue:`3311`, :issue:`3309`, :issue:`3305`, :issue:`3210`, :issue:`3299`)
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scrapy.http.cookies.CookieJar.clear accepts "domain", "path" and "name" optional arguments (:issue:`3231`).
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additional files are included to sdist (:issue:`3495`);
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code style fixes (:issue:`3405`, :issue:`3304`);
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unneeded .strip() call is removed (:issue:`3519`);
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collections.deque is used to store MiddlewareManager methods instead of a list (:issue:`3476`)
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Scrapy 1.5.2 (2019-01-22)
Security bugfix: Telnet console extension can be easily exploited by rogue websites POSTing content to http://localhost:6023, we haven't found a way to exploit it from Scrapy, but it is very easy to trick a browser to do so and elevates the risk for local development environment.
The fix is backward incompatible, it enables telnet user-password authentication by default with a random generated password. If you can't upgrade right away, please consider setting :setting:`TELNETCONSOLE_PORT` out of its default value.
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See :ref:`telnet console <topics-telnetconsole>` documentation for more info
System Message: ERROR/3 (<stdin>, line 7085); backlink
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Backport CI build failure under GCE environment due to boto import error.
Scrapy 1.5.1 (2018-07-12)
This is a maintenance release with important bug fixes, but no new features:
O(N^2) gzip decompression issue which affected Python 3 and PyPy is fixed (:issue:`3281`);
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skipping of TLS validation errors is improved (:issue:`3166`);
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Ctrl-C handling is fixed in Python 3.5+ (:issue:`3096`);
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testing fixes (:issue:`3092`, :issue:`3263`);
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documentation improvements (:issue:`3058`, :issue:`3059`, :issue:`3089`, :issue:`3123`, :issue:`3127`, :issue:`3189`, :issue:`3224`, :issue:`3280`, :issue:`3279`, :issue:`3201`, :issue:`3260`, :issue:`3284`, :issue:`3298`, :issue:`3294`).
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Scrapy 1.5.0 (2017-12-29)
This release brings small new features and improvements across the codebase. Some highlights:
- Google Cloud Storage is supported in FilesPipeline and ImagesPipeline.
- Crawling with proxy servers becomes more efficient, as connections to proxies can be reused now.
- Warnings, exception and logging messages are improved to make debugging easier.
- scrapy parse command now allows to set custom request meta via --meta argument.
- Compatibility with Python 3.6, PyPy and PyPy3 is improved; PyPy and PyPy3 are now supported officially, by running tests on CI.
- Better default handling of HTTP 308, 522 and 524 status codes.
- Documentation is improved, as usual.
Backward Incompatible Changes
Scrapy 1.5 drops support for Python 3.3.
Default Scrapy User-Agent now uses https link to scrapy.org (:issue:`2983`). This is technically backward-incompatible; override :setting:`USER_AGENT` if you relied on old value.
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Logging of settings overridden by custom_settings is fixed; this is technically backward-incompatible because the logger changes from [scrapy.utils.log] to [scrapy.crawler]. If you're parsing Scrapy logs, please update your log parsers (:issue:`1343`).
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LinkExtractor now ignores m4v extension by default, this is change in behavior.
522 and 524 status codes are added to RETRY_HTTP_CODES (:issue:`2851`)
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New features
Support <link> tags in Response.follow (:issue:`2785`)
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Support for ptpython REPL (:issue:`2654`)
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Google Cloud Storage support for FilesPipeline and ImagesPipeline (:issue:`2923`).
System Message: ERROR/3 (<stdin>, line 7147); backlink
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New --meta option of the "scrapy parse" command allows to pass additional request.meta (:issue:`2883`)
System Message: ERROR/3 (<stdin>, line 7149); backlink
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Populate spider variable when using shell.inspect_response (:issue:`2812`)
System Message: ERROR/3 (<stdin>, line 7151); backlink
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Handle HTTP 308 Permanent Redirect (:issue:`2844`)
System Message: ERROR/3 (<stdin>, line 7152); backlink
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Add 522 and 524 to RETRY_HTTP_CODES (:issue:`2851`)
System Message: ERROR/3 (<stdin>, line 7153); backlink
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Log versions information at startup (:issue:`2857`)
System Message: ERROR/3 (<stdin>, line 7154); backlink
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scrapy.mail.MailSender now works in Python 3 (it requires Twisted 17.9.0)
Connections to proxy servers are reused (:issue:`2743`)
System Message: ERROR/3 (<stdin>, line 7156); backlink
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Add template for a downloader middleware (:issue:`2755`)
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Explicit message for NotImplementedError when parse callback not defined (:issue:`2831`)
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CrawlerProcess got an option to disable installation of root log handler (:issue:`2921`)
System Message: ERROR/3 (<stdin>, line 7160); backlink
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LinkExtractor now ignores m4v extension by default
Better log messages for responses over :setting:`DOWNLOAD_WARNSIZE` and :setting:`DOWNLOAD_MAXSIZE` limits (:issue:`2927`)
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System Message: ERROR/3 (<stdin>, line 7163); backlink
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Show warning when a URL is put to Spider.allowed_domains instead of a domain (:issue:`2250`).
System Message: ERROR/3 (<stdin>, line 7165); backlink
Unknown interpreted text role "issue".
Bug fixes
Fix logging of settings overridden by custom_settings; this is technically backward-incompatible because the logger changes from [scrapy.utils.log] to [scrapy.crawler], so please update your log parsers if needed (:issue:`1343`)
System Message: ERROR/3 (<stdin>, line 7171); backlink
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Default Scrapy User-Agent now uses https link to scrapy.org (:issue:`2983`). This is technically backward-incompatible; override :setting:`USER_AGENT` if you relied on old value.
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Fix PyPy and PyPy3 test failures, support them officially (:issue:`2793`, :issue:`2935`, :issue:`2990`, :issue:`3050`, :issue:`2213`, :issue:`3048`)
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Fix DNS resolver when DNSCACHE_ENABLED=False (:issue:`2811`)
System Message: ERROR/3 (<stdin>, line 7181); backlink
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Add cryptography for Debian Jessie tox test env (:issue:`2848`)
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Add verification to check if Request callback is callable (:issue:`2766`)
System Message: ERROR/3 (<stdin>, line 7183); backlink
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Port extras/qpsclient.py to Python 3 (:issue:`2849`)
System Message: ERROR/3 (<stdin>, line 7184); backlink
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Use getfullargspec under the scenes for Python 3 to stop DeprecationWarning (:issue:`2862`)
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Update deprecated test aliases (:issue:`2876`)
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Fix SitemapSpider support for alternate links (:issue:`2853`)
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Docs
Added missing bullet point for the AUTOTHROTTLE_TARGET_CONCURRENCY setting. (:issue:`2756`)
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Update Contributing docs, document new support channels (:issue:`2762`, :issue:`3038`)
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Include references to Scrapy subreddit in the docs
Fix broken links; use https:// for external links (:issue:`2978`, :issue:`2982`, :issue:`2958`)
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Document CloseSpider extension better (:issue:`2759`)
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Use pymongo.collection.Collection.insert_one() in MongoDB example (:issue:`2781`)
System Message: ERROR/3 (<stdin>, line 7201); backlink
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Spelling mistake and typos (:issue:`2828`, :issue:`2837`, :issue:`2884`, :issue:`2924`)
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Clarify CSVFeedSpider.headers documentation (:issue:`2826`)
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Document DontCloseSpider exception and clarify spider_idle (:issue:`2791`)
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Update "Releases" section in README (:issue:`2764`)
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Fix rst syntax in DOWNLOAD_FAIL_ON_DATALOSS docs (:issue:`2763`)
System Message: ERROR/3 (<stdin>, line 7209); backlink
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Small fix in description of startproject arguments (:issue:`2866`)
System Message: ERROR/3 (<stdin>, line 7210); backlink
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Clarify data types in Response.body docs (:issue:`2922`)
System Message: ERROR/3 (<stdin>, line 7211); backlink
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Add a note about request.meta['depth'] to DepthMiddleware docs (:issue:`2374`)
System Message: ERROR/3 (<stdin>, line 7212); backlink
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Add a note about request.meta['dont_merge_cookies'] to CookiesMiddleware docs (:issue:`2999`)
System Message: ERROR/3 (<stdin>, line 7213); backlink
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Up-to-date example of project structure (:issue:`2964`, :issue:`2976`)
System Message: ERROR/3 (<stdin>, line 7215); backlink
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System Message: ERROR/3 (<stdin>, line 7215); backlink
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A better example of ItemExporters usage (:issue:`2989`)
System Message: ERROR/3 (<stdin>, line 7216); backlink
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Document from_crawler methods for spider and downloader middlewares (:issue:`3019`)
System Message: ERROR/3 (<stdin>, line 7217); backlink
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Scrapy 1.4.0 (2017-05-18)
Scrapy 1.4 does not bring that many breathtaking new features but quite a few handy improvements nonetheless.
Scrapy now supports anonymous FTP sessions with customizable user and password via the new :setting:`FTP_USER` and :setting:`FTP_PASSWORD` settings. And if you're using Twisted version 17.1.0 or above, FTP is now available with Python 3.
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Unknown interpreted text role "setting".System Message: ERROR/3 (<stdin>, line 7228); backlink
Unknown interpreted text role "setting".There's a new :meth:`response.follow <scrapy.http.TextResponse.follow>` method for creating requests; it is now a recommended way to create Requests in Scrapy spiders. This method makes it easier to write correct spiders; response.follow has several advantages over creating scrapy.Request objects directly:
System Message: ERROR/3 (<stdin>, line 7233); backlink
Unknown interpreted text role "meth".- it handles relative URLs;
- it works properly with non-ascii URLs on non-UTF8 pages;
- in addition to absolute and relative URLs it supports Selectors; for <a> elements it can also extract their href values.
For example, instead of this:
for href in response.css('li.page a::attr(href)').extract():
url = response.urljoin(href)
yield scrapy.Request(url, self.parse, encoding=response.encoding)
One can now write this:
for a in response.css('li.page a'):
yield response.follow(a, self.parse)
Link extractors are also improved. They work similarly to what a regular modern browser would do: leading and trailing whitespace are removed from attributes (think href=" http://example.com") when building Link objects. This whitespace-stripping also happens for action attributes with FormRequest.
Please also note that link extractors do not canonicalize URLs by default anymore. This was puzzling users every now and then, and it's not what browsers do in fact, so we removed that extra transformation on extracted links.
For those of you wanting more control on the Referer: header that Scrapy sends when following links, you can set your own Referrer Policy. Prior to Scrapy 1.4, the default RefererMiddleware would simply and blindly set it to the URL of the response that generated the HTTP request (which could leak information on your URL seeds). By default, Scrapy now behaves much like your regular browser does. And this policy is fully customizable with W3C standard values (or with something really custom of your own if you wish). See :setting:`REFERRER_POLICY` for details.
System Message: ERROR/3 (<stdin>, line 7266); backlink
Unknown interpreted text role "setting".To make Scrapy spiders easier to debug, Scrapy logs more stats by default in 1.4: memory usage stats, detailed retry stats, detailed HTTP error code stats. A similar change is that HTTP cache path is also visible in logs now.
Last but not least, Scrapy now has the option to make JSON and XML items more human-readable, with newlines between items and even custom indenting offset, using the new :setting:`FEED_EXPORT_INDENT` setting.
System Message: ERROR/3 (<stdin>, line 7280); backlink
Unknown interpreted text role "setting".Enjoy! (Or read on for the rest of changes in this release.)
Deprecations and Backward Incompatible Changes
Default to canonicalize=False in :class:`scrapy.linkextractors.LinkExtractor <scrapy.linkextractors.lxmlhtml.LxmlLinkExtractor>` (:issue:`2537`, fixes :issue:`1941` and :issue:`1982`): warning, this is technically backward-incompatible
System Message: ERROR/3 (<stdin>, line 7289); backlink
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System Message: ERROR/3 (<stdin>, line 7289); backlink
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System Message: ERROR/3 (<stdin>, line 7289); backlink
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Enable memusage extension by default (:issue:`2539`, fixes :issue:`2187`); this is technically backward-incompatible so please check if you have any non-default MEMUSAGE_*** options set.
System Message: ERROR/3 (<stdin>, line 7294); backlink
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System Message: ERROR/3 (<stdin>, line 7294); backlink
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EDITOR environment variable now takes precedence over EDITOR option defined in settings.py (:issue:`1829`); Scrapy default settings no longer depend on environment variables. This is technically a backward incompatible change.
System Message: ERROR/3 (<stdin>, line 7297); backlink
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Spider.make_requests_from_url is deprecated (:issue:`1728`, fixes :issue:`1495`).
System Message: ERROR/3 (<stdin>, line 7301); backlink
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System Message: ERROR/3 (<stdin>, line 7301); backlink
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New Features
Accept proxy credentials in :reqmeta:`proxy` request meta key (:issue:`2526`)
System Message: ERROR/3 (<stdin>, line 7307); backlink
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System Message: ERROR/3 (<stdin>, line 7307); backlink
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Support brotli-compressed content; requires optional brotlipy (:issue:`2535`)
System Message: ERROR/3 (<stdin>, line 7308); backlink
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New :ref:`response.follow <response-follow-example>` shortcut for creating requests (:issue:`1940`)
System Message: ERROR/3 (<stdin>, line 7310); backlink
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System Message: ERROR/3 (<stdin>, line 7310); backlink
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Added flags argument and attribute to :class:`~scrapy.Request` objects (:issue:`2047`)
System Message: ERROR/3 (<stdin>, line 7312); backlink
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System Message: ERROR/3 (<stdin>, line 7312); backlink
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Support Anonymous FTP (:issue:`2342`)
System Message: ERROR/3 (<stdin>, line 7314); backlink
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Added retry/count, retry/max_reached and retry/reason_count/<reason> stats to :class:`RetryMiddleware <scrapy.downloadermiddlewares.retry.RetryMiddleware>` (:issue:`2543`)
System Message: ERROR/3 (<stdin>, line 7315); backlink
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System Message: ERROR/3 (<stdin>, line 7315); backlink
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Added httperror/response_ignored_count and httperror/response_ignored_status_count/<status> stats to :class:`HttpErrorMiddleware <scrapy.spidermiddlewares.httperror.HttpErrorMiddleware>` (:issue:`2566`)
System Message: ERROR/3 (<stdin>, line 7318); backlink
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System Message: ERROR/3 (<stdin>, line 7318); backlink
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Customizable :setting:`Referrer policy <REFERRER_POLICY>` in :class:`RefererMiddleware <scrapy.spidermiddlewares.referer.RefererMiddleware>` (:issue:`2306`)
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New data: URI download handler (:issue:`2334`, fixes :issue:`2156`)
System Message: ERROR/3 (<stdin>, line 7324); backlink
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System Message: ERROR/3 (<stdin>, line 7324); backlink
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Log cache directory when HTTP Cache is used (:issue:`2611`, fixes :issue:`2604`)
System Message: ERROR/3 (<stdin>, line 7325); backlink
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System Message: ERROR/3 (<stdin>, line 7325); backlink
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Warn users when project contains duplicate spider names (fixes :issue:`2181`)
System Message: ERROR/3 (<stdin>, line 7326); backlink
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scrapy.utils.datatypes.CaselessDict now accepts Mapping instances and not only dicts (:issue:`2646`)
System Message: ERROR/3 (<stdin>, line 7327); backlink
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:ref:`Media downloads <topics-media-pipeline>`, with :class:`~scrapy.pipelines.files.FilesPipeline` or :class:`~scrapy.pipelines.images.ImagesPipeline`, can now optionally handle HTTP redirects using the new :setting:`MEDIA_ALLOW_REDIRECTS` setting (:issue:`2616`, fixes :issue:`2004`)
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System Message: ERROR/3 (<stdin>, line 7329); backlink
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System Message: ERROR/3 (<stdin>, line 7329); backlink
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System Message: ERROR/3 (<stdin>, line 7329); backlink
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System Message: ERROR/3 (<stdin>, line 7329); backlink
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Accept non-complete responses from websites using a new :setting:`DOWNLOAD_FAIL_ON_DATALOSS` setting (:issue:`2590`, fixes :issue:`2586`)
System Message: ERROR/3 (<stdin>, line 7334); backlink
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System Message: ERROR/3 (<stdin>, line 7334); backlink
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System Message: ERROR/3 (<stdin>, line 7334); backlink
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Optional pretty-printing of JSON and XML items via :setting:`FEED_EXPORT_INDENT` setting (:issue:`2456`, fixes :issue:`1327`)
System Message: ERROR/3 (<stdin>, line 7336); backlink
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System Message: ERROR/3 (<stdin>, line 7336); backlink
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System Message: ERROR/3 (<stdin>, line 7336); backlink
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Allow dropping fields in FormRequest.from_response formdata when None value is passed (:issue:`667`)
System Message: ERROR/3 (<stdin>, line 7338); backlink
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Per-request retry times with the new :reqmeta:`max_retry_times` meta key (:issue:`2642`)
System Message: ERROR/3 (<stdin>, line 7340); backlink
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System Message: ERROR/3 (<stdin>, line 7340); backlink
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python -m scrapy as a more explicit alternative to scrapy command (:issue:`2740`)
System Message: ERROR/3 (<stdin>, line 7342); backlink
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Bug fixes
LinkExtractor now strips leading and trailing whitespaces from attributes (:issue:`2547`, fixes :issue:`1614`)
System Message: ERROR/3 (<stdin>, line 7351); backlink
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System Message: ERROR/3 (<stdin>, line 7351); backlink
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Properly handle whitespaces in action attribute in :class:`~scrapy.FormRequest` (:issue:`2548`)
System Message: ERROR/3 (<stdin>, line 7353); backlink
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System Message: ERROR/3 (<stdin>, line 7353); backlink
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Buffer CONNECT response bytes from proxy until all HTTP headers are received (:issue:`2495`, fixes :issue:`2491`)
System Message: ERROR/3 (<stdin>, line 7355); backlink
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System Message: ERROR/3 (<stdin>, line 7355); backlink
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FTP downloader now works on Python 3, provided you use Twisted>=17.1 (:issue:`2599`)
System Message: ERROR/3 (<stdin>, line 7357); backlink
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Use body to choose response type after decompressing content (:issue:`2393`, fixes :issue:`2145`)
System Message: ERROR/3 (<stdin>, line 7359); backlink
Unknown interpreted text role "issue".
System Message: ERROR/3 (<stdin>, line 7359); backlink
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Always decompress Content-Encoding: gzip at :class:`HttpCompressionMiddleware <scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware>` stage (:issue:`2391`)
System Message: ERROR/3 (<stdin>, line 7361); backlink
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System Message: ERROR/3 (<stdin>, line 7361); backlink
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Respect custom log level in Spider.custom_settings (:issue:`2581`, fixes :issue:`1612`)
System Message: ERROR/3 (<stdin>, line 7363); backlink
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System Message: ERROR/3 (<stdin>, line 7363); backlink
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'make htmlview' fix for macOS (:issue:`2661`)
System Message: ERROR/3 (<stdin>, line 7365); backlink
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Remove "commands" from the command list (:issue:`2695`)
System Message: ERROR/3 (<stdin>, line 7366); backlink
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Fix duplicate Content-Length header for POST requests with empty body (:issue:`2677`)
System Message: ERROR/3 (<stdin>, line 7367); backlink
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Properly cancel large downloads, i.e. above :setting:`DOWNLOAD_MAXSIZE` (:issue:`1616`)
System Message: ERROR/3 (<stdin>, line 7368); backlink
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System Message: ERROR/3 (<stdin>, line 7368); backlink
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ImagesPipeline: fixed processing of transparent PNG images with palette (:issue:`2675`)
System Message: ERROR/3 (<stdin>, line 7369); backlink
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Cleanups & Refactoring
Tests: remove temp files and folders (:issue:`2570`), fixed ProjectUtilsTest on macOS (:issue:`2569`), use portable pypy for Linux on Travis CI (:issue:`2710`)
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System Message: ERROR/3 (<stdin>, line 7375); backlink
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System Message: ERROR/3 (<stdin>, line 7375); backlink
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Separate building request from _requests_to_follow in CrawlSpider (:issue:`2562`)
System Message: ERROR/3 (<stdin>, line 7378); backlink
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Remove “Python 3 progress” badge (:issue:`2567`)
System Message: ERROR/3 (<stdin>, line 7379); backlink
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Add a couple more lines to .gitignore (:issue:`2557`)
System Message: ERROR/3 (<stdin>, line 7380); backlink
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Remove bumpversion prerelease configuration (:issue:`2159`)
System Message: ERROR/3 (<stdin>, line 7381); backlink
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Add codecov.yml file (:issue:`2750`)
System Message: ERROR/3 (<stdin>, line 7382); backlink
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Set context factory implementation based on Twisted version (:issue:`2577`, fixes :issue:`2560`)
System Message: ERROR/3 (<stdin>, line 7383); backlink
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System Message: ERROR/3 (<stdin>, line 7383); backlink
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Add omitted self arguments in default project middleware template (:issue:`2595`)
System Message: ERROR/3 (<stdin>, line 7385); backlink
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Remove redundant slot.add_request() call in ExecutionEngine (:issue:`2617`)
System Message: ERROR/3 (<stdin>, line 7386); backlink
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Catch more specific os.error exception in scrapy.pipelines.files.FSFilesStore (:issue:`2644`)
System Message: ERROR/3 (<stdin>, line 7387); backlink
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Change "localhost" test server certificate (:issue:`2720`)
System Message: ERROR/3 (<stdin>, line 7389); backlink
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Remove unused MEMUSAGE_REPORT setting (:issue:`2576`)
System Message: ERROR/3 (<stdin>, line 7390); backlink
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Documentation
Binary mode is required for exporters (:issue:`2564`, fixes :issue:`2553`)
System Message: ERROR/3 (<stdin>, line 7395); backlink
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System Message: ERROR/3 (<stdin>, line 7395); backlink
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Mention issue with :meth:`.FormRequest.from_response` due to bug in lxml (:issue:`2572`)
System Message: ERROR/3 (<stdin>, line 7396); backlink
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System Message: ERROR/3 (<stdin>, line 7396); backlink
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Use single quotes uniformly in templates (:issue:`2596`)
System Message: ERROR/3 (<stdin>, line 7397); backlink
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Document :reqmeta:`ftp_user` and :reqmeta:`ftp_password` meta keys (:issue:`2587`)
System Message: ERROR/3 (<stdin>, line 7398); backlink
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System Message: ERROR/3 (<stdin>, line 7398); backlink
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System Message: ERROR/3 (<stdin>, line 7398); backlink
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Removed section on deprecated contrib/ (:issue:`2636`)
System Message: ERROR/3 (<stdin>, line 7399); backlink
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Recommend Anaconda when installing Scrapy on Windows (:issue:`2477`, fixes :issue:`2475`)
System Message: ERROR/3 (<stdin>, line 7400); backlink
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System Message: ERROR/3 (<stdin>, line 7400); backlink
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FAQ: rewrite note on Python 3 support on Windows (:issue:`2690`)
System Message: ERROR/3 (<stdin>, line 7402); backlink
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Rearrange selector sections (:issue:`2705`)
System Message: ERROR/3 (<stdin>, line 7403); backlink
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Remove __nonzero__ from :class:`~scrapy.selector.SelectorList` docs (:issue:`2683`)
System Message: ERROR/3 (<stdin>, line 7404); backlink
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System Message: ERROR/3 (<stdin>, line 7404); backlink
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Mention how to disable request filtering in documentation of :setting:`DUPEFILTER_CLASS` setting (:issue:`2714`)
System Message: ERROR/3 (<stdin>, line 7406); backlink
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System Message: ERROR/3 (<stdin>, line 7406); backlink
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Add sphinx_rtd_theme to docs setup readme (:issue:`2668`)
System Message: ERROR/3 (<stdin>, line 7408); backlink
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Open file in text mode in JSON item writer example (:issue:`2729`)
System Message: ERROR/3 (<stdin>, line 7409); backlink
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Clarify allowed_domains example (:issue:`2670`)
System Message: ERROR/3 (<stdin>, line 7410); backlink
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Scrapy 1.3.3 (2017-03-10)
Bug fixes
Make SpiderLoader raise ImportError again by default for missing dependencies and wrong :setting:`SPIDER_MODULES`. These exceptions were silenced as warnings since 1.3.0. A new setting is introduced to toggle between warning or exception if needed ; see :setting:`SPIDER_LOADER_WARN_ONLY` for details.
System Message: ERROR/3 (<stdin>, line 7421); backlink
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System Message: ERROR/3 (<stdin>, line 7421); backlink
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Scrapy 1.3.2 (2017-02-13)
Bug fixes
Preserve request class when converting to/from dicts (utils.reqser) (:issue:`2510`).
System Message: ERROR/3 (<stdin>, line 7435); backlink
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Use consistent selectors for author field in tutorial (:issue:`2551`).
System Message: ERROR/3 (<stdin>, line 7436); backlink
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Fix TLS compatibility in Twisted 17+ (:issue:`2558`)
System Message: ERROR/3 (<stdin>, line 7437); backlink
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Scrapy 1.3.1 (2017-02-08)
New features
Support 'True' and 'False' string values for boolean settings (:issue:`2519`); you can now do something like scrapy crawl myspider -s REDIRECT_ENABLED=False.
System Message: ERROR/3 (<stdin>, line 7447); backlink
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Support kwargs with response.xpath() to use :ref:`XPath variables <topics-selectors-xpath-variables>` and ad-hoc namespaces declarations ; this requires at least Parsel v1.1 (:issue:`2457`).
System Message: ERROR/3 (<stdin>, line 7449); backlink
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System Message: ERROR/3 (<stdin>, line 7449); backlink
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Add support for Python 3.6 (:issue:`2485`).
System Message: ERROR/3 (<stdin>, line 7452); backlink
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Run tests on PyPy (warning: some tests still fail, so PyPy is not supported yet).
Bug fixes
Enforce DNS_TIMEOUT setting (:issue:`2496`).
System Message: ERROR/3 (<stdin>, line 7458); backlink
Unknown interpreted text role "issue".
Fix :command:`view` command ; it was a regression in v1.3.0 (:issue:`2503`).
System Message: ERROR/3 (<stdin>, line 7459); backlink
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System Message: ERROR/3 (<stdin>, line 7459); backlink
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Fix tests regarding *_EXPIRES settings with Files/Images pipelines (:issue:`2460`).
System Message: ERROR/3 (<stdin>, line 7460); backlink
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Fix name of generated pipeline class when using basic project template (:issue:`2466`).
System Message: ERROR/3 (<stdin>, line 7461); backlink
Unknown interpreted text role "issue".
Fix compatibility with Twisted 17+ (:issue:`2496`, :issue:`2528`).
System Message: ERROR/3 (<stdin>, line 7462); backlink
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System Message: ERROR/3 (<stdin>, line 7462); backlink
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Fix scrapy.Item inheritance on Python 3.6 (:issue:`2511`).
System Message: ERROR/3 (<stdin>, line 7463); backlink
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Enforce numeric values for components order in SPIDER_MIDDLEWARES, DOWNLOADER_MIDDLEWARES, EXTENSIONS and SPIDER_CONTRACTS (:issue:`2420`).
System Message: ERROR/3 (<stdin>, line 7464); backlink
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Documentation
Reword Code of Conduct section and upgrade to Contributor Covenant v1.4 (:issue:`2469`).
System Message: ERROR/3 (<stdin>, line 7470); backlink
Unknown interpreted text role "issue".
Clarify that passing spider arguments converts them to spider attributes (:issue:`2483`).
System Message: ERROR/3 (<stdin>, line 7472); backlink
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Document formid argument on FormRequest.from_response() (:issue:`2497`).
System Message: ERROR/3 (<stdin>, line 7474); backlink
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Add .rst extension to README files (:issue:`2507`).
System Message: ERROR/3 (<stdin>, line 7475); backlink
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Mention LevelDB cache storage backend (:issue:`2525`).
System Message: ERROR/3 (<stdin>, line 7476); backlink
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Use yield in sample callback code (:issue:`2533`).
System Message: ERROR/3 (<stdin>, line 7477); backlink
Unknown interpreted text role "issue".
Add note about HTML entities decoding with .re()/.re_first() (:issue:`1704`).
System Message: ERROR/3 (<stdin>, line 7478); backlink
Unknown interpreted text role "issue".
Typos (:issue:`2512`, :issue:`2534`, :issue:`2531`).
System Message: ERROR/3 (<stdin>, line 7479); backlink
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System Message: ERROR/3 (<stdin>, line 7479); backlink
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System Message: ERROR/3 (<stdin>, line 7479); backlink
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Cleanups
Remove redundant check in MetaRefreshMiddleware (:issue:`2542`).
System Message: ERROR/3 (<stdin>, line 7484); backlink
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Faster checks in LinkExtractor for allow/deny patterns (:issue:`2538`).
System Message: ERROR/3 (<stdin>, line 7485); backlink
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Remove dead code supporting old Twisted versions (:issue:`2544`).
System Message: ERROR/3 (<stdin>, line 7486); backlink
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Scrapy 1.3.0 (2016-12-21)
This release comes rather soon after 1.2.2 for one main reason: it was found out that releases since 0.18 up to 1.2.2 (included) use some backported code from Twisted (scrapy.xlib.tx.*), even if newer Twisted modules are available. Scrapy now uses twisted.web.client and twisted.internet.endpoints directly. (See also cleanups below.)
As it is a major change, we wanted to get the bug fix out quickly while not breaking any projects using the 1.2 series.
New Features
MailSender now accepts single strings as values for to and cc arguments (:issue:`2272`)
System Message: ERROR/3 (<stdin>, line 7507); backlink
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scrapy fetch url, scrapy shell url and fetch(url) inside Scrapy shell now follow HTTP redirections by default (:issue:`2290`); See :command:`fetch` and :command:`shell` for details.
System Message: ERROR/3 (<stdin>, line 7509); backlink
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System Message: ERROR/3 (<stdin>, line 7509); backlink
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System Message: ERROR/3 (<stdin>, line 7509); backlink
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HttpErrorMiddleware now logs errors with INFO level instead of DEBUG; this is technically backward incompatible so please check your log parsers.
By default, logger names now use a long-form path, e.g. [scrapy.extensions.logstats], instead of the shorter "top-level" variant of prior releases (e.g. [scrapy]); this is backward incompatible if you have log parsers expecting the short logger name part. You can switch back to short logger names using :setting:`LOG_SHORT_NAMES` set to True.
System Message: ERROR/3 (<stdin>, line 7514); backlink
Unknown interpreted text role "setting".
Dependencies & Cleanups
- Scrapy now requires Twisted >= 13.1 which is the case for many Linux distributions already.
- As a consequence, we got rid of scrapy.xlib.tx.* modules, which copied some of Twisted code for users stuck with an "old" Twisted version
- ChunkedTransferMiddleware is deprecated and removed from the default downloader middlewares.
Scrapy 1.2.3 (2017-03-03)
- Packaging fix: disallow unsupported Twisted versions in setup.py
Scrapy 1.2.2 (2016-12-06)
Bug fixes
Fix a cryptic traceback when a pipeline fails on open_spider() (:issue:`2011`)
System Message: ERROR/3 (<stdin>, line 7546); backlink
Unknown interpreted text role "issue".
Fix embedded IPython shell variables (fixing :issue:`396` that re-appeared in 1.2.0, fixed in :issue:`2418`)
System Message: ERROR/3 (<stdin>, line 7547); backlink
Unknown interpreted text role "issue".
System Message: ERROR/3 (<stdin>, line 7547); backlink
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A couple of patches when dealing with robots.txt:
handle (non-standard) relative sitemap URLs (:issue:`2390`)
System Message: ERROR/3 (<stdin>, line 7551); backlink
Unknown interpreted text role "issue".
handle non-ASCII URLs and User-Agents in Python 2 (:issue:`2373`)
System Message: ERROR/3 (<stdin>, line 7552); backlink
Unknown interpreted text role "issue".
Documentation
Document "download_latency" key in Request's meta dict (:issue:`2033`)
System Message: ERROR/3 (<stdin>, line 7557); backlink
Unknown interpreted text role "issue".
Remove page on (deprecated & unsupported) Ubuntu packages from ToC (:issue:`2335`)
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A few fixed typos (:issue:`2346`, :issue:`2369`, :issue:`2369`, :issue:`2380`) and clarifications (:issue:`2354`, :issue:`2325`, :issue:`2414`)
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Other changes
Advertize conda-forge as Scrapy's official conda channel (:issue:`2387`)
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More helpful error messages when trying to use .css() or .xpath() on non-Text Responses (:issue:`2264`)
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startproject command now generates a sample middlewares.py file (:issue:`2335`)
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Add more dependencies' version info in scrapy version verbose output (:issue:`2404`)
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Remove all *.pyc files from source distribution (:issue:`2386`)
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Scrapy 1.2.1 (2016-10-21)
Bug fixes
Include OpenSSL's more permissive default ciphers when establishing TLS/SSL connections (:issue:`2314`).
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Fix "Location" HTTP header decoding on non-ASCII URL redirects (:issue:`2321`).
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Documentation
Fix JsonWriterPipeline example (:issue:`2302`).
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Various notes: :issue:`2330` on spider names, :issue:`2329` on middleware methods processing order, :issue:`2327` on getting multi-valued HTTP headers as lists.
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Other changes
Removed www. from start_urls in built-in spider templates (:issue:`2299`).
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Scrapy 1.2.0 (2016-10-03)
New Features
New :setting:`FEED_EXPORT_ENCODING` setting to customize the encoding used when writing items to a file. This can be used to turn off \uXXXX escapes in JSON output. This is also useful for those wanting something else than UTF-8 for XML or CSV output (:issue:`2034`).
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startproject command now supports an optional destination directory to override the default one based on the project name (:issue:`2005`).
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New :setting:`SCHEDULER_DEBUG` setting to log requests serialization failures (:issue:`1610`).
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JSON encoder now supports serialization of set instances (:issue:`2058`).
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Interpret application/json-amazonui-streaming as TextResponse (:issue:`1503`).
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scrapy is imported by default when using shell tools (:command:`shell`, :ref:`inspect_response <topics-shell-inspect-response>`) (:issue:`2248`).
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Bug fixes
DefaultRequestHeaders middleware now runs before UserAgent middleware (:issue:`2088`). Warning: this is technically backward incompatible, though we consider this a bug fix.
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HTTP cache extension and plugins that use the .scrapy data directory now work outside projects (:issue:`1581`). Warning: this is technically backward incompatible, though we consider this a bug fix.
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Selector does not allow passing both response and text anymore (:issue:`2153`).
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Fixed logging of wrong callback name with scrapy parse (:issue:`2169`).
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Fix for an odd gzip decompression bug (:issue:`1606`).
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Fix for selected callbacks when using CrawlSpider with :command:`scrapy parse <parse>` (:issue:`2225`).
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Fix for invalid JSON and XML files when spider yields no items (:issue:`872`).
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Implement flush() for StreamLogger avoiding a warning in logs (:issue:`2125`).
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Refactoring
canonicalize_url has been moved to w3lib.url (:issue:`2168`).
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Tests & Requirements
Scrapy's new requirements baseline is Debian 8 "Jessie". It was previously Ubuntu 12.04 Precise. What this means in practice is that we run continuous integration tests with these (main) packages versions at a minimum: Twisted 14.0, pyOpenSSL 0.14, lxml 3.4.
Scrapy may very well work with older versions of these packages (the code base still has switches for older Twisted versions for example) but it is not guaranteed (because it's not tested anymore).
Documentation
Grammar fixes: :issue:`2128`, :issue:`1566`.
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Download stats badge removed from README (:issue:`2160`).
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New Scrapy :ref:`architecture diagram <topics-architecture>` (:issue:`2165`).
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Updated Response parameters documentation (:issue:`2197`).
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Reworded misleading :setting:`RANDOMIZE_DOWNLOAD_DELAY` description (:issue:`2190`).
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Add StackOverflow as a support channel (:issue:`2257`).
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Scrapy 1.1.4 (2017-03-03)
- Packaging fix: disallow unsupported Twisted versions in setup.py
Scrapy 1.1.3 (2016-09-22)
Bug fixes
Class attributes for subclasses of ImagesPipeline and FilesPipeline work as they did before 1.1.1 (:issue:`2243`, fixes :issue:`2198`)
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Documentation
:ref:`Overview <intro-overview>` and :ref:`tutorial <intro-tutorial>` rewritten to use http://toscrape.com websites (:issue:`2236`, :issue:`2249`, :issue:`2252`).
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Scrapy 1.1.2 (2016-08-18)
Bug fixes
Introduce a missing :setting:`IMAGES_STORE_S3_ACL` setting to override the default ACL policy in ImagesPipeline when uploading images to S3 (note that default ACL policy is "private" -- instead of "public-read" -- since Scrapy 1.1.0)
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:setting:`IMAGES_EXPIRES` default value set back to 90 (the regression was introduced in 1.1.1)
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Scrapy 1.1.1 (2016-07-13)
Bug fixes
Add "Host" header in CONNECT requests to HTTPS proxies (:issue:`2069`)
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Use response body when choosing response class (:issue:`2001`, fixes :issue:`2000`)
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Do not fail on canonicalizing URLs with wrong netlocs (:issue:`2038`, fixes :issue:`2010`)
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a few fixes for HttpCompressionMiddleware (and SitemapSpider):
Do not decode HEAD responses (:issue:`2008`, fixes :issue:`1899`)
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Handle charset parameter in gzip Content-Type header (:issue:`2050`, fixes :issue:`2049`)
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Do not decompress gzip octet-stream responses (:issue:`2065`, fixes :issue:`2063`)
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Catch (and ignore with a warning) exception when verifying certificate against IP-address hosts (:issue:`2094`, fixes :issue:`2092`)
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Make FilesPipeline and ImagesPipeline backward compatible again regarding the use of legacy class attributes for customization (:issue:`1989`, fixes :issue:`1985`)
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New features
Enable genspider command outside project folder (:issue:`2052`)
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Retry HTTPS CONNECT TunnelError by default (:issue:`1974`)
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Documentation
FEED_TEMPDIR setting at lexicographical position (:commit:`9b3c72c`)
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Use idiomatic .extract_first() in overview (:issue:`1994`)
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Update years in copyright notice (:commit:`c2c8036`)
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Add information and example on errbacks (:issue:`1995`)
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Use "url" variable in downloader middleware example (:issue:`2015`)
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Grammar fixes (:issue:`2054`, :issue:`2120`)
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New FAQ entry on using BeautifulSoup in spider callbacks (:issue:`2048`)
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Add notes about Scrapy not working on Windows with Python 3 (:issue:`2060`)
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Encourage complete titles in pull requests (:issue:`2026`)
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Tests
Upgrade py.test requirement on Travis CI and Pin pytest-cov to 2.2.1 (:issue:`2095`)
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Scrapy 1.1.0 (2016-05-11)
This 1.1 release brings a lot of interesting features and bug fixes:
Scrapy 1.1 has beta Python 3 support (requires Twisted >= 15.5). See :ref:`news_betapy3` for more details and some limitations.
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Hot new features:
Item loaders now support nested loaders (:issue:`1467`).
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FormRequest.from_response improvements (:issue:`1382`, :issue:`1137`).
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Added setting :setting:`AUTOTHROTTLE_TARGET_CONCURRENCY` and improved AutoThrottle docs (:issue:`1324`).
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Added response.text to get body as unicode (:issue:`1730`).
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Anonymous S3 connections (:issue:`1358`).
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Deferreds in downloader middlewares (:issue:`1473`). This enables better robots.txt handling (:issue:`1471`).
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HTTP caching now follows RFC2616 more closely, added settings :setting:`HTTPCACHE_ALWAYS_STORE` and :setting:`HTTPCACHE_IGNORE_RESPONSE_CACHE_CONTROLS` (:issue:`1151`).
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Selectors were extracted to the parsel library (:issue:`1409`). This means you can use Scrapy Selectors without Scrapy and also upgrade the selectors engine without needing to upgrade Scrapy.
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HTTPS downloader now does TLS protocol negotiation by default, instead of forcing TLS 1.0. You can also set the SSL/TLS method using the new DOWNLOADER_CLIENT_TLS_METHOD setting.
These bug fixes may require your attention:
Don't retry bad requests (HTTP 400) by default (:issue:`1289`). If you need the old behavior, add 400 to :setting:`RETRY_HTTP_CODES`.
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Fix shell files argument handling (:issue:`1710`, :issue:`1550`). If you try scrapy shell index.html it will try to load the URL http://index.html, use scrapy shell ./index.html to load a local file.
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Robots.txt compliance is now enabled by default for newly-created projects (:issue:`1724`). Scrapy will also wait for robots.txt to be downloaded before proceeding with the crawl (:issue:`1735`). If you want to disable this behavior, update :setting:`ROBOTSTXT_OBEY` in settings.py file after creating a new project.
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Exporters now work on unicode, instead of bytes by default (:issue:`1080`). If you use :class:`~scrapy.exporters.PythonItemExporter`, you may want to update your code to disable binary mode which is now deprecated.
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Accept XML node names containing dots as valid (:issue:`1533`).
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When uploading files or images to S3 (with FilesPipeline or ImagesPipeline), the default ACL policy is now "private" instead of "public" Warning: backward incompatible!. You can use :setting:`FILES_STORE_S3_ACL` to change it.
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We've reimplemented canonicalize_url() for more correct output, especially for URLs with non-ASCII characters (:issue:`1947`). This could change link extractors output compared to previous Scrapy versions. This may also invalidate some cache entries you could still have from pre-1.1 runs. Warning: backward incompatible!.
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Keep reading for more details on other improvements and bug fixes.
Beta Python 3 Support
We have been hard at work to make Scrapy run on Python 3. As a result, now you can run spiders on Python 3.3, 3.4 and 3.5 (Twisted >= 15.5 required). Some features are still missing (and some may never be ported).
Almost all builtin extensions/middlewares are expected to work. However, we are aware of some limitations in Python 3:
- Scrapy does not work on Windows with Python 3
- Sending emails is not supported
- FTP download handler is not supported
- Telnet console is not supported
Additional New Features and Enhancements
Scrapy now has a Code of Conduct (:issue:`1681`).
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Command line tool now has completion for zsh (:issue:`934`).
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Improvements to scrapy shell:
Support for bpython and configure preferred Python shell via SCRAPY_PYTHON_SHELL (:issue:`1100`, :issue:`1444`).
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Support URLs without scheme (:issue:`1498`) Warning: backward incompatible!
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Bring back support for relative file path (:issue:`1710`, :issue:`1550`).
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Added :setting:`MEMUSAGE_CHECK_INTERVAL_SECONDS` setting to change default check interval (:issue:`1282`).
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Download handlers are now lazy-loaded on first request using their scheme (:issue:`1390`, :issue:`1421`).
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HTTPS download handlers do not force TLS 1.0 anymore; instead, OpenSSL's SSLv23_method()/TLS_method() is used allowing to try negotiating with the remote hosts the highest TLS protocol version it can (:issue:`1794`, :issue:`1629`).
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RedirectMiddleware now skips the status codes from handle_httpstatus_list on spider attribute or in Request's meta key (:issue:`1334`, :issue:`1364`, :issue:`1447`).
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Form submission:
now works with <button> elements too (:issue:`1469`).
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an empty string is now used for submit buttons without a value (:issue:`1472`)
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Dict-like settings now have per-key priorities (:issue:`1135`, :issue:`1149` and :issue:`1586`).
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Sending non-ASCII emails (:issue:`1662`)
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CloseSpider and SpiderState extensions now get disabled if no relevant setting is set (:issue:`1723`, :issue:`1725`).
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Added method ExecutionEngine.close (:issue:`1423`).
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Added method CrawlerRunner.create_crawler (:issue:`1528`).
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Scheduler priority queue can now be customized via :setting:`SCHEDULER_PRIORITY_QUEUE` (:issue:`1822`).
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.pps links are now ignored by default in link extractors (:issue:`1835`).
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temporary data folder for FTP and S3 feed storages can be customized using a new :setting:`FEED_TEMPDIR` setting (:issue:`1847`).
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FilesPipeline and ImagesPipeline settings are now instance attributes instead of class attributes, enabling spider-specific behaviors (:issue:`1891`).
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JsonItemExporter now formats opening and closing square brackets on their own line (first and last lines of output file) (:issue:`1950`).
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If available, botocore is used for S3FeedStorage, S3DownloadHandler and S3FilesStore (:issue:`1761`, :issue:`1883`).
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Tons of documentation updates and related fixes (:issue:`1291`, :issue:`1302`, :issue:`1335`, :issue:`1683`, :issue:`1660`, :issue:`1642`, :issue:`1721`, :issue:`1727`, :issue:`1879`).
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Other refactoring, optimizations and cleanup (:issue:`1476`, :issue:`1481`, :issue:`1477`, :issue:`1315`, :issue:`1290`, :issue:`1750`, :issue:`1881`).
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Deprecations and Removals
Added to_bytes and to_unicode, deprecated str_to_unicode and unicode_to_str functions (:issue:`778`).
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binary_is_text is introduced, to replace use of isbinarytext (but with inverse return value) (:issue:`1851`)
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The optional_features set has been removed (:issue:`1359`).
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The --lsprof command line option has been removed (:issue:`1689`). Warning: backward incompatible, but doesn't break user code.
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The following datatypes were deprecated (:issue:`1720`):
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- scrapy.utils.datatypes.MultiValueDictKeyError
- scrapy.utils.datatypes.MultiValueDict
- scrapy.utils.datatypes.SiteNode
The previously bundled scrapy.xlib.pydispatch library was deprecated and replaced by pydispatcher.
Relocations
telnetconsole was relocated to extensions/ (:issue:`1524`).
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- Note: telnet is not enabled on Python 3 (https://github.com/scrapy/scrapy/pull/1524#issuecomment-146985595)
Bugfixes
Scrapy does not retry requests that got a HTTP 400 Bad Request response anymore (:issue:`1289`). Warning: backward incompatible!
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Support empty password for http_proxy config (:issue:`1274`).
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Interpret application/x-json as TextResponse (:issue:`1333`).
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Support link rel attribute with multiple values (:issue:`1201`).
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Fixed scrapy.FormRequest.from_response when there is a <base> tag (:issue:`1564`).
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Fixed :setting:`TEMPLATES_DIR` handling (:issue:`1575`).
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Various FormRequest fixes (:issue:`1595`, :issue:`1596`, :issue:`1597`).
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Makes _monkeypatches more robust (:issue:`1634`).
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Fixed bug on XMLItemExporter with non-string fields in items (:issue:`1738`).
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Fixed startproject command in macOS (:issue:`1635`).
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Fixed :class:`~scrapy.exporters.PythonItemExporter` and CSVExporter for non-string item types (:issue:`1737`).
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Various logging related fixes (:issue:`1294`, :issue:`1419`, :issue:`1263`, :issue:`1624`, :issue:`1654`, :issue:`1722`, :issue:`1726` and :issue:`1303`).
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Fixed bug in utils.template.render_templatefile() (:issue:`1212`).
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sitemaps extraction from robots.txt is now case-insensitive (:issue:`1902`).
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HTTPS+CONNECT tunnels could get mixed up when using multiple proxies to same remote host (:issue:`1912`).
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Scrapy 1.0.7 (2017-03-03)
- Packaging fix: disallow unsupported Twisted versions in setup.py
Scrapy 1.0.6 (2016-05-04)
FIX: RetryMiddleware is now robust to non-standard HTTP status codes (:issue:`1857`)
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FIX: Filestorage HTTP cache was checking wrong modified time (:issue:`1875`)
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DOC: Support for Sphinx 1.4+ (:issue:`1893`)
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DOC: Consistency in selectors examples (:issue:`1869`)
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Scrapy 1.0.5 (2016-02-04)
FIX: [Backport] Ignore bogus links in LinkExtractors (fixes :issue:`907`, :commit:`108195e`)
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TST: Changed buildbot makefile to use 'pytest' (:commit:`1f3d90a`)
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DOC: Fixed typos in tutorial and media-pipeline (:commit:`808a9ea` and :commit:`803bd87`)
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DOC: Add AjaxCrawlMiddleware to DOWNLOADER_MIDDLEWARES_BASE in settings docs (:commit:`aa94121`)
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Scrapy 1.0.4 (2015-12-30)
Ignoring xlib/tx folder, depending on Twisted version. (:commit:`7dfa979`)
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Run on new travis-ci infra (:commit:`6e42f0b`)
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Spelling fixes (:commit:`823a1cc`)
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escape nodename in xmliter regex (:commit:`da3c155`)
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test xml nodename with dots (:commit:`4418fc3`)
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TST don't use broken Pillow version in tests (:commit:`a55078c`)
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disable log on version command. closes #1426 (:commit:`86fc330`)
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disable log on startproject command (:commit:`db4c9fe`)
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Add PyPI download stats badge (:commit:`df2b944`)
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don't run tests twice on Travis if a PR is made from a scrapy/scrapy branch (:commit:`a83ab41`)
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Add Python 3 porting status badge to the README (:commit:`73ac80d`)
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fixed RFPDupeFilter persistence (:commit:`97d080e`)
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TST a test to show that dupefilter persistence is not working (:commit:`97f2fb3`)
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explicit close file on file:// scheme handler (:commit:`d9b4850`)
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Disable dupefilter in shell (:commit:`c0d0734`)
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DOC: Add captions to toctrees which appear in sidebar (:commit:`aa239ad`)
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DOC Removed pywin32 from install instructions as it's already declared as dependency. (:commit:`10eb400`)
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Added installation notes about using Conda for Windows and other OSes. (:commit:`1c3600a`)
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Fixed minor grammar issues. (:commit:`7f4ddd5`)
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fixed a typo in the documentation. (:commit:`b71f677`)
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Version 1 now exists (:commit:`5456c0e`)
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fix another invalid xpath error (:commit:`0a1366e`)
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fix ValueError: Invalid XPath: //div/[id="not-exists"]/text() on selectors.rst (:commit:`ca8d60f`)
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Typos corrections (:commit:`7067117`)
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fix typos in downloader-middleware.rst and exceptions.rst, middlware -> middleware (:commit:`32f115c`)
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Add note to Ubuntu install section about Debian compatibility (:commit:`23fda69`)
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Replace alternative macOS install workaround with virtualenv (:commit:`98b63ee`)
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Reference Homebrew's homepage for installation instructions (:commit:`1925db1`)
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Add oldest supported tox version to contributing docs (:commit:`5d10d6d`)
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Note in install docs about pip being already included in python>=2.7.9 (:commit:`85c980e`)
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Add non-python dependencies to Ubuntu install section in the docs (:commit:`fbd010d`)
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Add macOS installation section to docs (:commit:`d8f4cba`)
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DOC(ENH): specify path to rtd theme explicitly (:commit:`de73b1a`)
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minor: scrapy.Spider docs grammar (:commit:`1ddcc7b`)
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Make common practices sample code match the comments (:commit:`1b85bcf`)
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nextcall repetitive calls (heartbeats). (:commit:`55f7104`)
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Backport fix compatibility with Twisted 15.4.0 (:commit:`b262411`)
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pin pytest to 2.7.3 (:commit:`a6535c2`)
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Merge pull request #1512 from mgedmin/patch-1 (:commit:`8876111`)
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Merge pull request #1513 from mgedmin/patch-2 (:commit:`5d4daf8`)
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Typo (:commit:`f8d0682`)
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Fix list formatting (:commit:`5f83a93`)
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fix Scrapy squeue tests after recent changes to queuelib (:commit:`3365c01`)
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Merge pull request #1475 from rweindl/patch-1 (:commit:`2d688cd`)
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Update tutorial.rst (:commit:`fbc1f25`)
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Merge pull request #1449 from rhoekman/patch-1 (:commit:`7d6538c`)
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Small grammatical change (:commit:`8752294`)
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Add openssl version to version command (:commit:`13c45ac`)
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Scrapy 1.0.3 (2015-08-11)
add service_identity to Scrapy install_requires (:commit:`cbc2501`)
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Workaround for travis#296 (:commit:`66af9cd`)
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Scrapy 1.0.2 (2015-08-06)
Twisted 15.3.0 does not raises PicklingError serializing lambda functions (:commit:`b04dd7d`)
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Minor method name fix (:commit:`6f85c7f`)
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minor: scrapy.Spider grammar and clarity (:commit:`9c9d2e0`)
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Put a blurb about support channels in CONTRIBUTING (:commit:`c63882b`)
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Fixed typos (:commit:`a9ae7b0`)
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Fix doc reference. (:commit:`7c8a4fe`)
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Scrapy 1.0.1 (2015-07-01)
Unquote request path before passing to FTPClient, it already escape paths (:commit:`cc00ad2`)
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include tests/ to source distribution in MANIFEST.in (:commit:`eca227e`)
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DOC Fix SelectJmes documentation (:commit:`b8567bc`)
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DOC Bring Ubuntu and Archlinux outside of Windows subsection (:commit:`392233f`)
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DOC remove version suffix from Ubuntu package (:commit:`5303c66`)
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DOC Update release date for 1.0 (:commit:`c89fa29`)
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Scrapy 1.0.0 (2015-06-19)
You will find a lot of new features and bugfixes in this major release. Make sure to check our updated :ref:`overview <intro-overview>` to get a glance of some of the changes, along with our brushed :ref:`tutorial <intro-tutorial>`.
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Declaring and returning Scrapy Items is no longer necessary to collect the scraped data from your spider, you can now return explicit dictionaries instead.
Classic version
class MyItem(scrapy.Item):
url = scrapy.Field()
class MySpider(scrapy.Spider):
def parse(self, response):
return MyItem(url=response.url)
New version
class MySpider(scrapy.Spider):
def parse(self, response):
return {'url': response.url}
Per-spider settings (GSoC 2014)
Last Google Summer of Code project accomplished an important redesign of the mechanism used for populating settings, introducing explicit priorities to override any given setting. As an extension of that goal, we included a new level of priority for settings that act exclusively for a single spider, allowing them to redefine project settings.
Start using it by defining a :attr:`~scrapy.spiders.Spider.custom_settings` class variable in your spider:
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custom_settings = {
"DOWNLOAD_DELAY": 5.0,
"RETRY_ENABLED": False,
}
Read more about settings population: :ref:`topics-settings`
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Scrapy 1.0 has moved away from Twisted logging to support Python built in’s as default logging system. We’re maintaining backward compatibility for most of the old custom interface to call logging functions, but you’ll get warnings to switch to the Python logging API entirely.
Old version
from scrapy import log
log.msg('MESSAGE', log.INFO)
New version
import logging
logging.info('MESSAGE')
Logging with spiders remains the same, but on top of the :meth:`~scrapy.spiders.Spider.log` method you’ll have access to a custom :attr:`~scrapy.spiders.Spider.logger` created for the spider to issue log events:
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def parse(self, response):
self.logger.info('Response received')
Read more in the logging documentation: :ref:`topics-logging`
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Unknown interpreted text role "ref".Crawler API refactoring (GSoC 2014)
Another milestone for last Google Summer of Code was a refactoring of the internal API, seeking a simpler and easier usage. Check new core interface in: :ref:`topics-api`
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Unknown interpreted text role "ref".A common situation where you will face these changes is while running Scrapy from scripts. Here’s a quick example of how to run a Spider manually with the new API:
from scrapy.crawler import CrawlerProcess
process = CrawlerProcess({
'USER_AGENT': 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)'
})
process.crawl(MySpider)
process.start()
Bear in mind this feature is still under development and its API may change until it reaches a stable status.
See more examples for scripts running Scrapy: :ref:`topics-practices`
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There’s been a large rearrangement of modules trying to improve the general structure of Scrapy. Main changes were separating various subpackages into new projects and dissolving both scrapy.contrib and scrapy.contrib_exp into top level packages. Backward compatibility was kept among internal relocations, while importing deprecated modules expect warnings indicating their new place.
Full list of relocations
Outsourced packages
Note
These extensions went through some minor changes, e.g. some setting names were changed. Please check the documentation in each new repository to get familiar with the new usage.
| Old location | New location |
|---|---|
| scrapy.commands.deploy | scrapyd-client (See other alternatives here: :ref:`topics-deploy`) System Message: ERROR/3 (<stdin>, line 8206); backlink Unknown interpreted text role "ref". |
| scrapy.contrib.djangoitem | scrapy-djangoitem |
| scrapy.webservice | scrapy-jsonrpc |
scrapy.contrib_exp and scrapy.contrib dissolutions
| Old location | New location |
|---|---|
| scrapy.contrib_exp.downloadermiddleware.decompression | scrapy.downloadermiddlewares.decompression |
| scrapy.contrib_exp.iterators | scrapy.utils.iterators |
| scrapy.contrib.downloadermiddleware | scrapy.downloadermiddlewares |
| scrapy.contrib.exporter | scrapy.exporters |
| scrapy.contrib.linkextractors | scrapy.linkextractors |
| scrapy.contrib.loader | scrapy.loader |
| scrapy.contrib.loader.processor | scrapy.loader.processors |
| scrapy.contrib.pipeline | scrapy.pipelines |
| scrapy.contrib.spidermiddleware | scrapy.spidermiddlewares |
| scrapy.contrib.spiders | scrapy.spiders |
|
scrapy.extensions.* |
Plural renames and Modules unification
| Old location | New location |
|---|---|
| scrapy.command | scrapy.commands |
| scrapy.dupefilter | scrapy.dupefilters |
| scrapy.linkextractor | scrapy.linkextractors |
| scrapy.spider | scrapy.spiders |
| scrapy.squeue | scrapy.squeues |
| scrapy.statscol | scrapy.statscollectors |
| scrapy.utils.decorator | scrapy.utils.decorators |
Class renames
| Old location | New location |
|---|---|
| scrapy.spidermanager.SpiderManager | scrapy.spiderloader.SpiderLoader |
Settings renames
| Old location | New location |
|---|---|
| SPIDER_MANAGER_CLASS | SPIDER_LOADER_CLASS |
Changelog
New Features and Enhancements
Python logging (:issue:`1060`, :issue:`1235`, :issue:`1236`, :issue:`1240`, :issue:`1259`, :issue:`1278`, :issue:`1286`)
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FEED_EXPORT_FIELDS option (:issue:`1159`, :issue:`1224`)
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Dns cache size and timeout options (:issue:`1132`)
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support namespace prefix in xmliter_lxml (:issue:`963`)
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Reactor threadpool max size setting (:issue:`1123`)
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Allow spiders to return dicts. (:issue:`1081`)
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Add Response.urljoin() helper (:issue:`1086`)
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look in ~/.config/scrapy.cfg for user config (:issue:`1098`)
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handle TLS SNI (:issue:`1101`)
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Selectorlist extract first (:issue:`624`, :issue:`1145`)
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Added JmesSelect (:issue:`1016`)
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add gzip compression to filesystem http cache backend (:issue:`1020`)
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CSS support in link extractors (:issue:`983`)
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httpcache dont_cache meta #19 #689 (:issue:`821`)
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add signal to be sent when request is dropped by the scheduler (:issue:`961`)
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avoid download large response (:issue:`946`)
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Allow to specify the quotechar in CSVFeedSpider (:issue:`882`)
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Add referer to "Spider error processing" log message (:issue:`795`)
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process robots.txt once (:issue:`896`)
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GSoC Per-spider settings (:issue:`854`)
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Add project name validation (:issue:`817`)
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GSoC API cleanup (:issue:`816`, :issue:`1128`, :issue:`1147`, :issue:`1148`, :issue:`1156`, :issue:`1185`, :issue:`1187`, :issue:`1258`, :issue:`1268`, :issue:`1276`, :issue:`1285`, :issue:`1284`)
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Be more responsive with IO operations (:issue:`1074` and :issue:`1075`)
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Do leveldb compaction for httpcache on closing (:issue:`1297`)
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Deprecations and Removals
Deprecate htmlparser link extractor (:issue:`1205`)
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remove deprecated code from FeedExporter (:issue:`1155`)
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a leftover for.15 compatibility (:issue:`925`)
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drop support for CONCURRENT_REQUESTS_PER_SPIDER (:issue:`895`)
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Drop old engine code (:issue:`911`)
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Deprecate SgmlLinkExtractor (:issue:`777`)
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Relocations
Move exporters/__init__.py to exporters.py (:issue:`1242`)
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Move base classes to their packages (:issue:`1218`, :issue:`1233`)
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Module relocation (:issue:`1181`, :issue:`1210`)
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rename SpiderManager to SpiderLoader (:issue:`1166`)
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Remove djangoitem (:issue:`1177`)
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remove scrapy deploy command (:issue:`1102`)
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dissolve contrib_exp (:issue:`1134`)
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Deleted bin folder from root, fixes #913 (:issue:`914`)
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Remove jsonrpc based webservice (:issue:`859`)
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Move Test cases under project root dir (:issue:`827`, :issue:`841`)
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Fix backward incompatibility for relocated paths in settings (:issue:`1267`)
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Documentation
CrawlerProcess documentation (:issue:`1190`)
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Favoring web scraping over screen scraping in the descriptions (:issue:`1188`)
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Some improvements for Scrapy tutorial (:issue:`1180`)
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Documenting Files Pipeline together with Images Pipeline (:issue:`1150`)
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deployment docs tweaks (:issue:`1164`)
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Added deployment section covering scrapyd-deploy and shub (:issue:`1124`)
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Adding more settings to project template (:issue:`1073`)
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some improvements to overview page (:issue:`1106`)
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Updated link in docs/topics/architecture.rst (:issue:`647`)
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DOC reorder topics (:issue:`1022`)
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updating list of Request.meta special keys (:issue:`1071`)
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DOC document download_timeout (:issue:`898`)
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DOC simplify extension docs (:issue:`893`)
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Leaks docs (:issue:`894`)
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DOC document from_crawler method for item pipelines (:issue:`904`)
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Spider_error doesn't support deferreds (:issue:`1292`)
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Corrections & Sphinx related fixes (:issue:`1220`, :issue:`1219`, :issue:`1196`, :issue:`1172`, :issue:`1171`, :issue:`1169`, :issue:`1160`, :issue:`1154`, :issue:`1127`, :issue:`1112`, :issue:`1105`, :issue:`1041`, :issue:`1082`, :issue:`1033`, :issue:`944`, :issue:`866`, :issue:`864`, :issue:`796`, :issue:`1260`, :issue:`1271`, :issue:`1293`, :issue:`1298`)
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Bugfixes
Item multi inheritance fix (:issue:`353`, :issue:`1228`)
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ItemLoader.load_item: iterate over copy of fields (:issue:`722`)
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Fix Unhandled error in Deferred (RobotsTxtMiddleware) (:issue:`1131`, :issue:`1197`)
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Force to read DOWNLOAD_TIMEOUT as int (:issue:`954`)
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scrapy.utils.misc.load_object should print full traceback (:issue:`902`)
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Fix bug for ".local" host name (:issue:`878`)
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Fix for Enabled extensions, middlewares, pipelines info not printed anymore (:issue:`879`)
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fix dont_merge_cookies bad behaviour when set to false on meta (:issue:`846`)
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Python 3 In Progress Support
disable scrapy.telnet if twisted.conch is not available (:issue:`1161`)
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fix Python 3 syntax errors in ajaxcrawl.py (:issue:`1162`)
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more python3 compatibility changes for urllib (:issue:`1121`)
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assertItemsEqual was renamed to assertCountEqual in Python 3. (:issue:`1070`)
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Import unittest.mock if available. (:issue:`1066`)
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updated deprecated cgi.parse_qsl to use six's parse_qsl (:issue:`909`)
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Prevent Python 3 port regressions (:issue:`830`)
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PY3: use MutableMapping for python 3 (:issue:`810`)
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PY3: use six.BytesIO and six.moves.cStringIO (:issue:`803`)
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PY3: fix xmlrpclib and email imports (:issue:`801`)
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PY3: use six for robotparser and urlparse (:issue:`800`)
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PY3: use six.iterkeys, six.iteritems, and tempfile (:issue:`799`)
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PY3: fix has_key and use six.moves.configparser (:issue:`798`)
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PY3: use six.moves.cPickle (:issue:`797`)
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PY3 make it possible to run some tests in Python3 (:issue:`776`)
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Tests
remove unnecessary lines from py3-ignores (:issue:`1243`)
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Fix remaining warnings from pytest while collecting tests (:issue:`1206`)
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Add docs build to travis (:issue:`1234`)
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TST don't collect tests from deprecated modules. (:issue:`1165`)
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install service_identity package in tests to prevent warnings (:issue:`1168`)
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Fix deprecated settings API in tests (:issue:`1152`)
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Add test for webclient with POST method and no body given (:issue:`1089`)
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py3-ignores.txt supports comments (:issue:`1044`)
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modernize some of the asserts (:issue:`835`)
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selector.__repr__ test (:issue:`779`)
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Code refactoring
CSVFeedSpider cleanup: use iterate_spider_output (:issue:`1079`)
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remove unnecessary check from scrapy.utils.spider.iter_spider_output (:issue:`1078`)
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Pydispatch pep8 (:issue:`992`)
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Removed unused 'load=False' parameter from walk_modules() (:issue:`871`)
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For consistency, use job_dir helper in SpiderState extension. (:issue:`805`)
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rename "sflo" local variables to less cryptic "log_observer" (:issue:`775`)
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Scrapy 0.24.6 (2015-04-20)
encode invalid xpath with unicode_escape under PY2 (:commit:`07cb3e5`)
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fix IPython shell scope issue and load IPython user config (:commit:`2c8e573`)
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Fix small typo in the docs (:commit:`d694019`)
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Fix small typo (:commit:`f92fa83`)
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Converted sel.xpath() calls to response.xpath() in Extracting the data (:commit:`c2c6d15`)
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Scrapy 0.24.5 (2015-02-25)
Support new _getEndpoint Agent signatures on Twisted 15.0.0 (:commit:`540b9bc`)
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DOC a couple more references are fixed (:commit:`b4c454b`)
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DOC fix a reference (:commit:`e3c1260`)
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t.i.b.ThreadedResolver is now a new-style class (:commit:`9e13f42`)
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S3DownloadHandler: fix auth for requests with quoted paths/query params (:commit:`cdb9a0b`)
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fixed the variable types in mailsender documentation (:commit:`bb3a848`)
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Reset items_scraped instead of item_count (:commit:`edb07a4`)
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Tentative attention message about what document to read for contributions (:commit:`7ee6f7a`)
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mitmproxy 0.10.1 needs netlib 0.10.1 too (:commit:`874fcdd`)
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pin mitmproxy 0.10.1 as >0.11 does not work with tests (:commit:`c6b21f0`)
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Test the parse command locally instead of against an external url (:commit:`c3a6628`)
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Patches Twisted issue while closing the connection pool on HTTPDownloadHandler (:commit:`d0bf957`)
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Updates documentation on dynamic item classes. (:commit:`eeb589a`)
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Merge pull request #943 from Lazar-T/patch-3 (:commit:`5fdab02`)
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typo (:commit:`b0ae199`)
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pywin32 is required by Twisted. closes #937 (:commit:`5cb0cfb`)
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Update install.rst (:commit:`781286b`)
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Merge pull request #928 from Lazar-T/patch-1 (:commit:`b415d04`)
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comma instead of fullstop (:commit:`627b9ba`)
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Merge pull request #885 from jsma/patch-1 (:commit:`de909ad`)
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Update request-response.rst (:commit:`3f3263d`)
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SgmlLinkExtractor - fix for parsing <area> tag with Unicode present (:commit:`49b40f0`)
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Scrapy 0.24.4 (2014-08-09)
pem file is used by mockserver and required by scrapy bench (:commit:`5eddc68b63`)
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scrapy bench needs scrapy.tests* (:commit:`d6cb999`)
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Scrapy 0.24.3 (2014-08-09)
no need to waste travis-ci time on py3 for 0.24 (:commit:`8e080c1`)
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Update installation docs (:commit:`1d0c096`)
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There is a trove classifier for Scrapy framework! (:commit:`4c701d7`)
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update other places where w3lib version is mentioned (:commit:`d109c13`)
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Update w3lib requirement to 1.8.0 (:commit:`39d2ce5`)
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Use w3lib.html.replace_entities() (remove_entities() is deprecated) (:commit:`180d3ad`)
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set zip_safe=False (:commit:`a51ee8b`)
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do not ship tests package (:commit:`ee3b371`)
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scrapy.bat is not needed anymore (:commit:`c3861cf`)
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Modernize setup.py (:commit:`362e322`)
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headers can not handle non-string values (:commit:`94a5c65`)
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fix ftp test cases (:commit:`a274a7f`)
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The sum up of travis-ci builds are taking like 50min to complete (:commit:`ae1e2cc`)
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Update shell.rst typo (:commit:`e49c96a`)
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removes weird indentation in the shell results (:commit:`1ca489d`)
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improved explanations, clarified blog post as source, added link for XPath string functions in the spec (:commit:`65c8f05`)
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renamed UserTimeoutError and ServerTimeouterror #583 (:commit:`037f6ab`)
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adding some xpath tips to selectors docs (:commit:`2d103e0`)
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fix tests to account for https://github.com/scrapy/w3lib/pull/23 (:commit:`f8d366a`)
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get_func_args maximum recursion fix #728 (:commit:`81344ea`)
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Updated input/output processor example according to #560. (:commit:`f7c4ea8`)
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Fixed Python syntax in tutorial. (:commit:`db59ed9`)
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Add test case for tunneling proxy (:commit:`f090260`)
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Bugfix for leaking Proxy-Authorization header to remote host when using tunneling (:commit:`d8793af`)
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Extract links from XHTML documents with MIME-Type "application/xml" (:commit:`ed1f376`)
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Merge pull request #793 from roysc/patch-1 (:commit:`91a1106`)
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Fix typo in commands.rst (:commit:`743e1e2`)
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better testcase for settings.overrides.setdefault (:commit:`e22daaf`)
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Using CRLF as line marker according to http 1.1 definition (:commit:`5ec430b`)
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Scrapy 0.24.2 (2014-07-08)
Use a mutable mapping to proxy deprecated settings.overrides and settings.defaults attribute (:commit:`e5e8133`)
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there is not support for python3 yet (:commit:`3cd6146`)
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Update python compatible version set to Debian packages (:commit:`fa5d76b`)
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DOC fix formatting in release notes (:commit:`c6a9e20`)
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Scrapy 0.24.1 (2014-06-27)
Fix deprecated CrawlerSettings and increase backward compatibility with .defaults attribute (:commit:`8e3f20a`)
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Scrapy 0.24.0 (2014-06-26)
Enhancements
Improve Scrapy top-level namespace (:issue:`494`, :issue:`684`)
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Add selector shortcuts to responses (:issue:`554`, :issue:`690`)
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Add new lxml based LinkExtractor to replace unmaintained SgmlLinkExtractor (:issue:`559`, :issue:`761`, :issue:`763`)
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Cleanup settings API - part of per-spider settings GSoC project (:issue:`737`)
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Add UTF8 encoding header to templates (:issue:`688`, :issue:`762`)
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Telnet console now binds to 127.0.0.1 by default (:issue:`699`)
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Update Debian/Ubuntu install instructions (:issue:`509`, :issue:`549`)
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Disable smart strings in lxml XPath evaluations (:issue:`535`)
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Restore filesystem based cache as default for http cache middleware (:issue:`541`, :issue:`500`, :issue:`571`)
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Expose current crawler in Scrapy shell (:issue:`557`)
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Improve testsuite comparing CSV and XML exporters (:issue:`570`)
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New offsite/filtered and offsite/domains stats (:issue:`566`)
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Support process_links as generator in CrawlSpider (:issue:`555`)
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Verbose logging and new stats counters for DupeFilter (:issue:`553`)
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Add a mimetype parameter to MailSender.send() (:issue:`602`)
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Generalize file pipeline log messages (:issue:`622`)
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Replace unencodeable codepoints with html entities in SGMLLinkExtractor (:issue:`565`)
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Converted SEP documents to rst format (:issue:`629`, :issue:`630`, :issue:`638`, :issue:`632`, :issue:`636`, :issue:`640`, :issue:`635`, :issue:`634`, :issue:`639`, :issue:`637`, :issue:`631`, :issue:`633`, :issue:`641`, :issue:`642`)
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Tests and docs for clickdata's nr index in FormRequest (:issue:`646`, :issue:`645`)
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System Message: ERROR/3 (<stdin>, line 8553); backlink
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Allow to disable a downloader handler just like any other component (:issue:`650`)
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Log when a request is discarded after too many redirections (:issue:`654`)
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Log error responses if they are not handled by spider callbacks (:issue:`612`, :issue:`656`)
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System Message: ERROR/3 (<stdin>, line 8556); backlink
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Add content-type check to http compression mw (:issue:`193`, :issue:`660`)
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Run pypy tests using latest pypi from ppa (:issue:`674`)
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Run test suite using pytest instead of trial (:issue:`679`)
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Build docs and check for dead links in tox environment (:issue:`687`)
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Make scrapy.version_info a tuple of integers (:issue:`681`, :issue:`692`)
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Infer exporter's output format from filename extensions (:issue:`546`, :issue:`659`, :issue:`760`)
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Support case-insensitive domains in url_is_from_any_domain() (:issue:`693`)
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Remove pep8 warnings in project and spider templates (:issue:`698`)
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Tests and docs for request_fingerprint function (:issue:`597`)
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Update SEP-19 for GSoC project per-spider settings (:issue:`705`)
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Set exit code to non-zero when contracts fails (:issue:`727`)
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Add a setting to control what class is instantiated as Downloader component (:issue:`738`)
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Pass response in item_dropped signal (:issue:`724`)
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Improve scrapy check contracts command (:issue:`733`, :issue:`752`)
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Document spider.closed() shortcut (:issue:`719`)
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Document request_scheduled signal (:issue:`746`)
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Add a note about reporting security issues (:issue:`697`)
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Add LevelDB http cache storage backend (:issue:`626`, :issue:`500`)
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Sort spider list output of scrapy list command (:issue:`742`)
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Multiple documentation enhancements and fixes (:issue:`575`, :issue:`587`, :issue:`590`, :issue:`596`, :issue:`610`, :issue:`617`, :issue:`618`, :issue:`627`, :issue:`613`, :issue:`643`, :issue:`654`, :issue:`675`, :issue:`663`, :issue:`711`, :issue:`714`)
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Bugfixes
Encode unicode URL value when creating Links in RegexLinkExtractor (:issue:`561`)
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Ignore None values in ItemLoader processors (:issue:`556`)
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Fix link text when there is an inner tag in SGMLLinkExtractor and HtmlParserLinkExtractor (:issue:`485`, :issue:`574`)
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Fix wrong checks on subclassing of deprecated classes (:issue:`581`, :issue:`584`)
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Handle errors caused by inspect.stack() failures (:issue:`582`)
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Fix a reference to unexistent engine attribute (:issue:`593`, :issue:`594`)
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Fix dynamic itemclass example usage of type() (:issue:`603`)
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Use lucasdemarchi/codespell to fix typos (:issue:`628`)
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Fix default value of attrs argument in SgmlLinkExtractor to be tuple (:issue:`661`)
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Fix XXE flaw in sitemap reader (:issue:`676`)
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Fix engine to support filtered start requests (:issue:`707`)
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Fix offsite middleware case on urls with no hostnames (:issue:`745`)
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Testsuite doesn't require PIL anymore (:issue:`585`)
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Scrapy 0.22.2 (released 2014-02-14)
fix a reference to unexistent engine.slots. closes #593 (:commit:`13c099a`)
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downloaderMW doc typo (spiderMW doc copy remnant) (:commit:`8ae11bf`)
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Correct typos (:commit:`1346037`)
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Scrapy 0.22.1 (released 2014-02-08)
localhost666 can resolve under certain circumstances (:commit:`2ec2279`)
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test inspect.stack failure (:commit:`cc3eda3`)
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Handle cases when inspect.stack() fails (:commit:`8cb44f9`)
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Fix wrong checks on subclassing of deprecated classes. closes #581 (:commit:`46d98d6`)
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Docs: 4-space indent for final spider example (:commit:`13846de`)
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Fix HtmlParserLinkExtractor and tests after #485 merge (:commit:`368a946`)
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BaseSgmlLinkExtractor: Fixed the missing space when the link has an inner tag (:commit:`b566388`)
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BaseSgmlLinkExtractor: Added unit test of a link with an inner tag (:commit:`c1cb418`)
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BaseSgmlLinkExtractor: Fixed unknown_endtag() so that it only set current_link=None when the end tag match the opening tag (:commit:`7e4d627`)
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Fix tests for Travis-CI build (:commit:`76c7e20`)
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replace unencodeable codepoints with html entities. fixes #562 and #285 (:commit:`5f87b17`)
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RegexLinkExtractor: encode URL unicode value when creating Links (:commit:`d0ee545`)
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Updated the tutorial crawl output with latest output. (:commit:`8da65de`)
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Updated shell docs with the crawler reference and fixed the actual shell output. (:commit:`875b9ab`)
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PEP8 minor edits. (:commit:`f89efaf`)
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Expose current crawler in the Scrapy shell. (:commit:`5349cec`)
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Unused re import and PEP8 minor edits. (:commit:`387f414`)
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Ignore None's values when using the ItemLoader. (:commit:`0632546`)
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DOC Fixed HTTPCACHE_STORAGE typo in the default value which is now Filesystem instead Dbm. (:commit:`cde9a8c`)
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show Ubuntu setup instructions as literal code (:commit:`fb5c9c5`)
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Update Ubuntu installation instructions (:commit:`70fb105`)
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Merge pull request #550 from stray-leone/patch-1 (:commit:`6f70b6a`)
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modify the version of Scrapy Ubuntu package (:commit:`725900d`)
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fix 0.22.0 release date (:commit:`af0219a`)
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fix typos in news.rst and remove (not released yet) header (:commit:`b7f58f4`)
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Scrapy 0.22.0 (released 2014-01-17)
Enhancements
[Backward incompatible] Switched HTTPCacheMiddleware backend to filesystem (:issue:`541`) To restore old backend set HTTPCACHE_STORAGE to scrapy.contrib.httpcache.DbmCacheStorage
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Proxy https:// urls using CONNECT method (:issue:`392`, :issue:`397`)
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Add a middleware to crawl ajax crawlable pages as defined by google (:issue:`343`)
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Rename scrapy.spider.BaseSpider to scrapy.spider.Spider (:issue:`510`, :issue:`519`)
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Selectors register EXSLT namespaces by default (:issue:`472`)
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Unify item loaders similar to selectors renaming (:issue:`461`)
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Make RFPDupeFilter class easily subclassable (:issue:`533`)
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Improve test coverage and forthcoming Python 3 support (:issue:`525`)
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Promote startup info on settings and middleware to INFO level (:issue:`520`)
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Support partials in get_func_args util (:issue:`506`, :issue:`504`)
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Allow running individual tests via tox (:issue:`503`)
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Update extensions ignored by link extractors (:issue:`498`)
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Add middleware methods to get files/images/thumbs paths (:issue:`490`)
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Improve offsite middleware tests (:issue:`478`)
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Add a way to skip default Referer header set by RefererMiddleware (:issue:`475`)
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Do not send x-gzip in default Accept-Encoding header (:issue:`469`)
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Support defining http error handling using settings (:issue:`466`)
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Use modern python idioms wherever you find legacies (:issue:`497`)
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Improve and correct documentation (:issue:`527`, :issue:`524`, :issue:`521`, :issue:`517`, :issue:`512`, :issue:`505`, :issue:`502`, :issue:`489`, :issue:`465`, :issue:`460`, :issue:`425`, :issue:`536`)
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Fixes
Update Selector class imports in CrawlSpider template (:issue:`484`)
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Fix unexistent reference to engine.slots (:issue:`464`)
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Do not try to call body_as_unicode() on a non-TextResponse instance (:issue:`462`)
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Warn when subclassing XPathItemLoader, previously it only warned on instantiation. (:issue:`523`)
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Warn when subclassing XPathSelector, previously it only warned on instantiation. (:issue:`537`)
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Multiple fixes to memory stats (:issue:`531`, :issue:`530`, :issue:`529`)
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Fix overriding url in FormRequest.from_response() (:issue:`507`)
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Fix tests runner under pip 1.5 (:issue:`513`)
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Fix logging error when spider name is unicode (:issue:`479`)
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Scrapy 0.20.2 (released 2013-12-09)
Update CrawlSpider Template with Selector changes (:commit:`6d1457d`)
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fix method name in tutorial. closes GH-480 (:commit:`b4fc359`
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Scrapy 0.20.1 (released 2013-11-28)
include_package_data is required to build wheels from published sources (:commit:`5ba1ad5`)
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process_parallel was leaking the failures on its internal deferreds. closes #458 (:commit:`419a780`)
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Scrapy 0.20.0 (released 2013-11-08)
Enhancements
New Selector's API including CSS selectors (:issue:`395` and :issue:`426`),
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Request/Response url/body attributes are now immutable (modifying them had been deprecated for a long time)
:setting:`ITEM_PIPELINES` is now defined as a dict (instead of a list)
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Sitemap spider can fetch alternate URLs (:issue:`360`)
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Selector.remove_namespaces() now remove namespaces from element's attributes. (:issue:`416`)
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Paved the road for Python 3.3+ (:issue:`435`, :issue:`436`, :issue:`431`, :issue:`452`)
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New item exporter using native python types with nesting support (:issue:`366`)
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Tune HTTP1.1 pool size so it matches concurrency defined by settings (:commit:`b43b5f575`)
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scrapy.mail.MailSender now can connect over TLS or upgrade using STARTTLS (:issue:`327`)
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New FilesPipeline with functionality factored out from ImagesPipeline (:issue:`370`, :issue:`409`)
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Recommend Pillow instead of PIL for image handling (:issue:`317`)
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Added Debian packages for Ubuntu Quantal and Raring (:commit:`86230c0`)
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Mock server (used for tests) can listen for HTTPS requests (:issue:`410`)
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Remove multi spider support from multiple core components (:issue:`422`, :issue:`421`, :issue:`420`, :issue:`419`, :issue:`423`, :issue:`418`)
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Travis-CI now tests Scrapy changes against development versions of w3lib and queuelib python packages.
Add pypy 2.1 to continuous integration tests (:commit:`ecfa7431`)
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Pylinted, pep8 and removed old-style exceptions from source (:issue:`430`, :issue:`432`)
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Use importlib for parametric imports (:issue:`445`)
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Handle a regression introduced in Python 2.7.5 that affects XmlItemExporter (:issue:`372`)
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Bugfix crawling shutdown on SIGINT (:issue:`450`)
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Do not submit reset type inputs in FormRequest.from_response (:commit:`b326b87`)
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Do not silence download errors when request errback raises an exception (:commit:`684cfc0`)
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Bugfixes
Fix tests under Django 1.6 (:commit:`b6bed44c`)
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Lot of bugfixes to retry middleware under disconnections using HTTP 1.1 download handler
Fix inconsistencies among Twisted releases (:issue:`406`)
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Fix Scrapy shell bugs (:issue:`418`, :issue:`407`)
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Fix invalid variable name in setup.py (:issue:`429`)
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Fix tutorial references (:issue:`387`)
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Improve request-response docs (:issue:`391`)
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Improve best practices docs (:issue:`399`, :issue:`400`, :issue:`401`, :issue:`402`)
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Improve django integration docs (:issue:`404`)
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Document bindaddress request meta (:commit:`37c24e01d7`)
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Improve Request class documentation (:issue:`226`)
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Other
Dropped Python 2.6 support (:issue:`448`)
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Add :doc:`cssselect <cssselect:index>` python package as install dependency
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Drop libxml2 and multi selector's backend support, lxml is required from now on.
Minimum Twisted version increased to 10.0.0, dropped Twisted 8.0 support.
Running test suite now requires mock python library (:issue:`390`)
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Thanks
Thanks to everyone who contribute to this release!
List of contributors sorted by number of commits:
69 Daniel Graña <dangra@...> 37 Pablo Hoffman <pablo@...> 13 Mikhail Korobov <kmike84@...> 9 Alex Cepoi <alex.cepoi@...> 9 alexanderlukanin13 <alexander.lukanin.13@...> 8 Rolando Espinoza La fuente <darkrho@...> 8 Lukasz Biedrycki <lukasz.biedrycki@...> 6 Nicolas Ramirez <nramirez.uy@...> 3 Paul Tremberth <paul.tremberth@...> 2 Martin Olveyra <molveyra@...> 2 Stefan <misc@...> 2 Rolando Espinoza <darkrho@...> 2 Loren Davie <loren@...> 2 irgmedeiros <irgmedeiros@...> 1 Stefan Koch <taikano@...> 1 Stefan <cct@...> 1 scraperdragon <dragon@...> 1 Kumara Tharmalingam <ktharmal@...> 1 Francesco Piccinno <stack.box@...> 1 Marcos Campal <duendex@...> 1 Dragon Dave <dragon@...> 1 Capi Etheriel <barraponto@...> 1 cacovsky <amarquesferraz@...> 1 Berend Iwema <berend@...>
Scrapy 0.18.4 (released 2013-10-10)
IPython refuses to update the namespace. fix #396 (:commit:`3d32c4f`)
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Fix AlreadyCalledError replacing a request in shell command. closes #407 (:commit:`b1d8919`)
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Fix start_requests() laziness and early hangs (:commit:`89faf52`)
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Scrapy 0.18.3 (released 2013-10-03)
fix regression on lazy evaluation of start requests (:commit:`12693a5`)
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forms: do not submit reset inputs (:commit:`e429f63`)
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increase unittest timeouts to decrease travis false positive failures (:commit:`912202e`)
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backport master fixes to json exporter (:commit:`cfc2d46`)
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Fix permission and set umask before generating sdist tarball (:commit:`06149e0`)
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Scrapy 0.18.2 (released 2013-09-03)
Backport scrapy check command fixes and backward compatible multi crawler process(:issue:`339`)
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Scrapy 0.18.1 (released 2013-08-27)
remove extra import added by cherry picked changes (:commit:`d20304e`)
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fix crawling tests under twisted pre 11.0.0 (:commit:`1994f38`)
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py26 can not format zero length fields {} (:commit:`abf756f`)
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test PotentiaDataLoss errors on unbound responses (:commit:`b15470d`)
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Treat responses without content-length or Transfer-Encoding as good responses (:commit:`c4bf324`)
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do no include ResponseFailed if http11 handler is not enabled (:commit:`6cbe684`)
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New HTTP client wraps connection lost in ResponseFailed exception. fix #373 (:commit:`1a20bba`)
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limit travis-ci build matrix (:commit:`3b01bb8`)
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Merge pull request #375 from peterarenot/patch-1 (:commit:`fa766d7`)
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Fixed so it refers to the correct folder (:commit:`3283809`)
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added Quantal & Raring to support Ubuntu releases (:commit:`1411923`)
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fix retry middleware which didn't retry certain connection errors after the upgrade to http1 client, closes GH-373 (:commit:`bb35ed0`)
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fix XmlItemExporter in Python 2.7.4 and 2.7.5 (:commit:`de3e451`)
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minor updates to 0.18 release notes (:commit:`c45e5f1`)
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fix contributors list format (:commit:`0b60031`)
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Scrapy 0.18.0 (released 2013-08-09)
Lot of improvements to testsuite run using Tox, including a way to test on pypi
Handle GET parameters for AJAX crawlable urls (:commit:`3fe2a32`)
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Use lxml recover option to parse sitemaps (:issue:`347`)
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Bugfix cookie merging by hostname and not by netloc (:issue:`352`)
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Support disabling HttpCompressionMiddleware using a flag setting (:issue:`359`)
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Support xml namespaces using iternodes parser in XMLFeedSpider (:issue:`12`)
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Support dont_cache request meta flag (:issue:`19`)
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Bugfix scrapy.utils.gz.gunzip broken by changes in python 2.7.4 (:commit:`4dc76e`)
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Bugfix url encoding on SgmlLinkExtractor (:issue:`24`)
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Bugfix TakeFirst processor shouldn't discard zero (0) value (:issue:`59`)
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Support nested items in xml exporter (:issue:`66`)
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Improve cookies handling performance (:issue:`77`)
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Log dupe filtered requests once (:issue:`105`)
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Split redirection middleware into status and meta based middlewares (:issue:`78`)
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Use HTTP1.1 as default downloader handler (:issue:`109` and :issue:`318`)
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Support xpath form selection on FormRequest.from_response (:issue:`185`)
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Bugfix unicode decoding error on SgmlLinkExtractor (:issue:`199`)
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Bugfix signal dispatching on pypi interpreter (:issue:`205`)
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Improve request delay and concurrency handling (:issue:`206`)
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Add RFC2616 cache policy to HttpCacheMiddleware (:issue:`212`)
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Allow customization of messages logged by engine (:issue:`214`)
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Multiples improvements to DjangoItem (:issue:`217`, :issue:`218`, :issue:`221`)
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Extend Scrapy commands using setuptools entry points (:issue:`260`)
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Allow spider allowed_domains value to be set/tuple (:issue:`261`)
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Support settings.getdict (:issue:`269`)
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Simplify internal scrapy.core.scraper slot handling (:issue:`271`)
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Added Item.copy (:issue:`290`)
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Collect idle downloader slots (:issue:`297`)
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Add ftp:// scheme downloader handler (:issue:`329`)
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Added downloader benchmark webserver and spider tools :ref:`benchmarking`
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Moved persistent (on disk) queues to a separate project (queuelib) which Scrapy now depends on
Add Scrapy commands using external libraries (:issue:`260`)
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Added --pdb option to scrapy command line tool
Added :meth:`XPathSelector.remove_namespaces <scrapy.Selector.remove_namespaces>` which allows to remove all namespaces from XML documents for convenience (to work with namespace-less XPaths). Documented in :ref:`topics-selectors`.
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Several improvements to spider contracts
New default middleware named MetaRefreshMiddleware that handles meta-refresh html tag redirections,
MetaRefreshMiddleware and RedirectMiddleware have different priorities to address #62
added from_crawler method to spiders
added system tests with mock server
more improvements to macOS compatibility (thanks Alex Cepoi)
several more cleanups to singletons and multi-spider support (thanks Nicolas Ramirez)
support custom download slots
added --spider option to "shell" command.
log overridden settings when Scrapy starts
Thanks to everyone who contribute to this release. Here is a list of contributors sorted by number of commits:
130 Pablo Hoffman <pablo@...> 97 Daniel Graña <dangra@...> 20 Nicolás Ramírez <nramirez.uy@...> 13 Mikhail Korobov <kmike84@...> 12 Pedro Faustino <pedrobandim@...> 11 Steven Almeroth <sroth77@...> 5 Rolando Espinoza La fuente <darkrho@...> 4 Michal Danilak <mimino.coder@...> 4 Alex Cepoi <alex.cepoi@...> 4 Alexandr N Zamaraev (aka tonal) <tonal@...> 3 paul <paul.tremberth@...> 3 Martin Olveyra <molveyra@...> 3 Jordi Llonch <llonchj@...> 3 arijitchakraborty <myself.arijit@...> 2 Shane Evans <shane.evans@...> 2 joehillen <joehillen@...> 2 Hart <HartSimha@...> 2 Dan <ellisd23@...> 1 Zuhao Wan <wanzuhao@...> 1 whodatninja <blake@...> 1 vkrest <v.krestiannykov@...> 1 tpeng <pengtaoo@...> 1 Tom Mortimer-Jones <tom@...> 1 Rocio Aramberri <roschegel@...> 1 Pedro <pedro@...> 1 notsobad <wangxiaohugg@...> 1 Natan L <kuyanatan.nlao@...> 1 Mark Grey <mark.grey@...> 1 Luan <luanpab@...> 1 Libor Nenadál <libor.nenadal@...> 1 Juan M Uys <opyate@...> 1 Jonas Brunsgaard <jonas.brunsgaard@...> 1 Ilya Baryshev <baryshev@...> 1 Hasnain Lakhani <m.hasnain.lakhani@...> 1 Emanuel Schorsch <emschorsch@...> 1 Chris Tilden <chris.tilden@...> 1 Capi Etheriel <barraponto@...> 1 cacovsky <amarquesferraz@...> 1 Berend Iwema <berend@...>
Scrapy 0.16.5 (released 2013-05-30)
obey request method when Scrapy deploy is redirected to a new endpoint (:commit:`8c4fcee`)
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fix inaccurate downloader middleware documentation. refs #280 (:commit:`40667cb`)
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doc: remove links to diveintopython.org, which is no longer available. closes #246 (:commit:`bd58bfa`)
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Find form nodes in invalid html5 documents (:commit:`e3d6945`)
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Fix typo labeling attrs type bool instead of list (:commit:`a274276`)
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Scrapy 0.16.4 (released 2013-01-23)
fixes spelling errors in documentation (:commit:`6d2b3aa`)
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add doc about disabling an extension. refs #132 (:commit:`c90de33`)
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Fixed error message formatting. log.err() doesn't support cool formatting and when error occurred, the message was: "ERROR: Error processing %(item)s" (:commit:`c16150c`)
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lint and improve images pipeline error logging (:commit:`56b45fc`)
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fixed doc typos (:commit:`243be84`)
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add documentation topics: Broad Crawls & Common Practices (:commit:`1fbb715`)
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fix bug in Scrapy parse command when spider is not specified explicitly. closes #209 (:commit:`c72e682`)
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Update docs/topics/commands.rst (:commit:`28eac7a`)
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Scrapy 0.16.3 (released 2012-12-07)
Remove concurrency limitation when using download delays and still ensure inter-request delays are enforced (:commit:`487b9b5`)
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add error details when image pipeline fails (:commit:`8232569`)
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improve macOS compatibility (:commit:`8dcf8aa`)
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setup.py: use README.rst to populate long_description (:commit:`7b5310d`)
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doc: removed obsolete references to ClientForm (:commit:`80f9bb6`)
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correct docs for default storage backend (:commit:`2aa491b`)
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doc: removed broken proxyhub link from FAQ (:commit:`bdf61c4`)
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Fixed docs typo in SpiderOpenCloseLogging example (:commit:`7184094`)
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Scrapy 0.16.2 (released 2012-11-09)
Scrapy contracts: python2.6 compat (:commit:`a4a9199`)
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Scrapy contracts verbose option (:commit:`ec41673`)
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proper unittest-like output for Scrapy contracts (:commit:`86635e4`)
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added open_in_browser to debugging doc (:commit:`c9b690d`)
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removed reference to global Scrapy stats from settings doc (:commit:`dd55067`)
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Fix SpiderState bug in Windows platforms (:commit:`58998f4`)
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Scrapy 0.16.1 (released 2012-10-26)
fixed LogStats extension, which got broken after a wrong merge before the 0.16 release (:commit:`8c780fd`)
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better backward compatibility for scrapy.conf.settings (:commit:`3403089`)
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extended documentation on how to access crawler stats from extensions (:commit:`c4da0b5`)
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removed .hgtags (no longer needed now that Scrapy uses git) (:commit:`d52c188`)
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fix dashes under rst headers (:commit:`fa4f7f9`)
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set release date for 0.16.0 in news (:commit:`e292246`)
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Scrapy 0.16.0 (released 2012-10-18)
Scrapy changes:
added :ref:`topics-contracts`, a mechanism for testing spiders in a formal/reproducible way
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added options -o and -t to the :command:`runspider` command
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documented :doc:`topics/autothrottle` and added to extensions installed by default. You still need to enable it with :setting:`AUTOTHROTTLE_ENABLED`
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major Stats Collection refactoring: removed separation of global/per-spider stats, removed stats-related signals (stats_spider_opened, etc). Stats are much simpler now, backward compatibility is kept on the Stats Collector API and signals.
added a process_start_requests() method to spider middlewares
dropped Signals singleton. Signals should now be accessed through the Crawler.signals attribute. See the signals documentation for more info.
dropped Stats Collector singleton. Stats can now be accessed through the Crawler.stats attribute. See the stats collection documentation for more info.
documented :ref:`topics-api`
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lxml is now the default selectors backend instead of libxml2
ported FormRequest.from_response() to use lxml instead of ClientForm
removed modules: scrapy.xlib.BeautifulSoup and scrapy.xlib.ClientForm
SitemapSpider: added support for sitemap urls ending in .xml and .xml.gz, even if they advertise a wrong content type (:commit:`10ed28b`)
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StackTraceDump extension: also dump trackref live references (:commit:`fe2ce93`)
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nested items now fully supported in JSON and JSONLines exporters
added :reqmeta:`cookiejar` Request meta key to support multiple cookie sessions per spider
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decoupled encoding detection code to w3lib.encoding, and ported Scrapy code to use that module
dropped support for Python 2.5. See https://www.zyte.com/blog/scrapy-0-15-dropping-support-for-python-2-5/
dropped support for Twisted 2.5
added :setting:`REFERER_ENABLED` setting, to control referer middleware
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changed default user agent to: Scrapy/VERSION (+http://scrapy.org)
removed (undocumented) HTMLImageLinkExtractor class from scrapy.contrib.linkextractors.image
removed per-spider settings (to be replaced by instantiating multiple crawler objects)
USER_AGENT spider attribute will no longer work, use user_agent attribute instead
DOWNLOAD_TIMEOUT spider attribute will no longer work, use download_timeout attribute instead
removed ENCODING_ALIASES setting, as encoding auto-detection has been moved to the w3lib library
promoted :ref:`topics-djangoitem` to main contrib
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LogFormatter method now return dicts(instead of strings) to support lazy formatting (:issue:`164`, :commit:`dcef7b0`)
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downloader handlers (:setting:`DOWNLOAD_HANDLERS` setting) now receive settings as the first argument of the __init__ method
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replaced memory usage accounting with (more portable) resource module, removed scrapy.utils.memory module
removed signal: scrapy.mail.mail_sent
removed TRACK_REFS setting, now :ref:`trackrefs <topics-leaks-trackrefs>` is always enabled
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DBM is now the default storage backend for HTTP cache middleware
number of log messages (per level) are now tracked through Scrapy stats (stat name: log_count/LEVEL)
number received responses are now tracked through Scrapy stats (stat name: response_received_count)
removed scrapy.log.started attribute
Scrapy 0.14.4
added precise to supported Ubuntu distros (:commit:`b7e46df`)
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fixed bug in json-rpc webservice reported in https://groups.google.com/forum/#!topic/scrapy-users/qgVBmFybNAQ/discussion. also removed no longer supported 'run' command from extras/scrapy-ws.py (:commit:`340fbdb`)
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meta tag attributes for content-type http equiv can be in any order. #123 (:commit:`0cb68af`)
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replace "import Image" by more standard "from PIL import Image". closes #88 (:commit:`4d17048`)
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return trial status as bin/runtests.sh exit value. #118 (:commit:`b7b2e7f`)
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Scrapy 0.14.3
forgot to include pydispatch license. #118 (:commit:`fd85f9c`)
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include egg files used by testsuite in source distribution. #118 (:commit:`c897793`)
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update docstring in project template to avoid confusion with genspider command, which may be considered as an advanced feature. refs #107 (:commit:`2548dcc`)
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added note to docs/topics/firebug.rst about google directory being shut down (:commit:`668e352`)
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don't discard slot when empty, just save in another dict in order to recycle if needed again. (:commit:`8e9f607`)
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do not fail handling unicode xpaths in libxml2 backed selectors (:commit:`b830e95`)
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fixed minor mistake in Request objects documentation (:commit:`bf3c9ee`)
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fixed minor defect in link extractors documentation (:commit:`ba14f38`)
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removed some obsolete remaining code related to sqlite support in Scrapy (:commit:`0665175`)
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Scrapy 0.14.2
move buffer pointing to start of file before computing checksum. refs #92 (:commit:`6a5bef2`)
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Compute image checksum before persisting images. closes #92 (:commit:`9817df1`)
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remove leaking references in cached failures (:commit:`673a120`)
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fixed bug in MemoryUsage extension: get_engine_status() takes exactly 1 argument (0 given) (:commit:`11133e9`)
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fixed struct.error on http compression middleware. closes #87 (:commit:`1423140`)
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ajax crawling wasn't expanding for unicode urls (:commit:`0de3fb4`)
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Catch start_requests() iterator errors. refs #83 (:commit:`454a21d`)
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Speed-up libxml2 XPathSelector (:commit:`2fbd662`)
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updated versioning doc according to recent changes (:commit:`0a070f5`)
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scrapyd: fixed documentation link (:commit:`2b4e4c3`)
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extras/makedeb.py: no longer obtaining version from git (:commit:`caffe0e`)
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Scrapy 0.14.1
extras/makedeb.py: no longer obtaining version from git (:commit:`caffe0e`)
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bumped version to 0.14.1 (:commit:`6cb9e1c`)
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fixed reference to tutorial directory (:commit:`4b86bd6`)
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doc: removed duplicated callback argument from Request.replace() (:commit:`1aeccdd`)
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fixed formatting of scrapyd doc (:commit:`8bf19e6`)
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Dump stacks for all running threads and fix engine status dumped by StackTraceDump extension (:commit:`14a8e6e`)
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added comment about why we disable ssl on boto images upload (:commit:`5223575`)
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SSL handshaking hangs when doing too many parallel connections to S3 (:commit:`63d583d`)
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change tutorial to follow changes on dmoz site (:commit:`bcb3198`)
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Avoid _disconnectedDeferred AttributeError exception in Twisted>=11.1.0 (:commit:`98f3f87`)
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allow spider to set autothrottle max concurrency (:commit:`175a4b5`)
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Scrapy 0.14
New features and settings
Support for AJAX crawlable urls
New persistent scheduler that stores requests on disk, allowing to suspend and resume crawls (:rev:`2737`)
System Message: ERROR/3 (<stdin>, line 9073); backlink
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added -o option to scrapy crawl, a shortcut for dumping scraped items into a file (or standard output using -)
Added support for passing custom settings to Scrapyd schedule.json api (:rev:`2779`, :rev:`2783`)
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New ChunkedTransferMiddleware (enabled by default) to support chunked transfer encoding (:rev:`2769`)
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Add boto 2.0 support for S3 downloader handler (:rev:`2763`)
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Added marshal to formats supported by feed exports (:rev:`2744`)
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In request errbacks, offending requests are now received in failure.request attribute (:rev:`2738`)
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- Big downloader refactoring to support per domain/ip concurrency limits (:rev:`2732`)
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- CONCURRENT_REQUESTS_PER_SPIDER setting has been deprecated and replaced by:
:setting:`CONCURRENT_REQUESTS`, :setting:`CONCURRENT_REQUESTS_PER_DOMAIN`, :setting:`CONCURRENT_REQUESTS_PER_IP`
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check the documentation for more details
Added builtin caching DNS resolver (:rev:`2728`)
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Moved Amazon AWS-related components/extensions (SQS spider queue, SimpleDB stats collector) to a separate project: [scaws](https://github.com/scrapinghub/scaws) (:rev:`2706`, :rev:`2714`)
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Moved spider queues to scrapyd: scrapy.spiderqueue -> scrapyd.spiderqueue (:rev:`2708`)
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Moved sqlite utils to scrapyd: scrapy.utils.sqlite -> scrapyd.sqlite (:rev:`2781`)
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Real support for returning iterators on start_requests() method. The iterator is now consumed during the crawl when the spider is getting idle (:rev:`2704`)
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Added :setting:`REDIRECT_ENABLED` setting to quickly enable/disable the redirect middleware (:rev:`2697`)
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Added :setting:`RETRY_ENABLED` setting to quickly enable/disable the retry middleware (:rev:`2694`)
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Added CloseSpider exception to manually close spiders (:rev:`2691`)
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Improved encoding detection by adding support for HTML5 meta charset declaration (:rev:`2690`)
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Refactored close spider behavior to wait for all downloads to finish and be processed by spiders, before closing the spider (:rev:`2688`)
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Added SitemapSpider (see documentation in Spiders page) (:rev:`2658`)
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Added LogStats extension for periodically logging basic stats (like crawled pages and scraped items) (:rev:`2657`)
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Make handling of gzipped responses more robust (#319, :rev:`2643`). Now Scrapy will try and decompress as much as possible from a gzipped response, instead of failing with an IOError.
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Simplified !MemoryDebugger extension to use stats for dumping memory debugging info (:rev:`2639`)
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Added new command to edit spiders: scrapy edit (:rev:`2636`) and -e flag to genspider command that uses it (:rev:`2653`)
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Changed default representation of items to pretty-printed dicts. (:rev:`2631`). This improves default logging by making log more readable in the default case, for both Scraped and Dropped lines.
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Added :signal:`spider_error` signal (:rev:`2628`)
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Added :setting:`COOKIES_ENABLED` setting (:rev:`2625`)
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Stats are now dumped to Scrapy log (default value of :setting:`STATS_DUMP` setting has been changed to True). This is to make Scrapy users more aware of Scrapy stats and the data that is collected there.
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Added support for dynamically adjusting download delay and maximum concurrent requests (:rev:`2599`)
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Added new DBM HTTP cache storage backend (:rev:`2576`)
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Added listjobs.json API to Scrapyd (:rev:`2571`)
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CsvItemExporter: added join_multivalued parameter (:rev:`2578`)
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Added namespace support to xmliter_lxml (:rev:`2552`)
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Improved cookies middleware by making COOKIES_DEBUG nicer and documenting it (:rev:`2579`)
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Several improvements to Scrapyd and Link extractors
Code rearranged and removed
- Merged item passed and item scraped concepts, as they have often proved confusing in the past. This means: (:rev:`2630`)
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- original item_scraped signal was removed
- original item_passed signal was renamed to item_scraped
- old log lines Scraped Item... were removed
- old log lines Passed Item... were renamed to Scraped Item... lines and downgraded to DEBUG level
- Reduced Scrapy codebase by striping part of Scrapy code into two new libraries:
w3lib (several functions from scrapy.utils.{http,markup,multipart,response,url}, done in :rev:`2584`)
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scrapely (was scrapy.contrib.ibl, done in :rev:`2586`)
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Removed unused function: scrapy.utils.request.request_info() (:rev:`2577`)
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Removed googledir project from examples/googledir. There's now a new example project called dirbot available on GitHub: https://github.com/scrapy/dirbot
Removed support for default field values in Scrapy items (:rev:`2616`)
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Removed experimental crawlspider v2 (:rev:`2632`)
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Removed scheduler middleware to simplify architecture. Duplicates filter is now done in the scheduler itself, using the same dupe filtering class as before (DUPEFILTER_CLASS setting) (:rev:`2640`)
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Removed support for passing urls to scrapy crawl command (use scrapy parse instead) (:rev:`2704`)
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Removed deprecated Execution Queue (:rev:`2704`)
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Removed (undocumented) spider context extension (from scrapy.contrib.spidercontext) (:rev:`2780`)
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removed CONCURRENT_SPIDERS setting (use scrapyd maxproc instead) (:rev:`2789`)
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Renamed attributes of core components: downloader.sites -> downloader.slots, scraper.sites -> scraper.slots (:rev:`2717`, :rev:`2718`)
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Renamed setting CLOSESPIDER_ITEMPASSED to :setting:`CLOSESPIDER_ITEMCOUNT` (:rev:`2655`). Backward compatibility kept.
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Scrapy 0.12
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features and improvements
Passed item is now sent in the item argument of the :signal:`item_passed <item_scraped>` (#273)
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Added verbose option to scrapy version command, useful for bug reports (#298)
HTTP cache now stored by default in the project data dir (#279)
Added project data storage directory (#276, #277)
Documented file structure of Scrapy projects (see command-line tool doc)
New lxml backend for XPath selectors (#147)
Per-spider settings (#245)
Support exit codes to signal errors in Scrapy commands (#248)
Added -c argument to scrapy shell command
Made libxml2 optional (#260)
New deploy command (#261)
Added :setting:`CLOSESPIDER_PAGECOUNT` setting (#253)
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Added :setting:`CLOSESPIDER_ERRORCOUNT` setting (#254)
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Scrapyd changes
- Scrapyd now uses one process per spider
- It stores one log file per spider run, and rotate them keeping the latest 5 logs per spider (by default)
- A minimal web ui was added, available at http://localhost:6800 by default
- There is now a scrapy server command to start a Scrapyd server of the current project
Changes to settings
- added HTTPCACHE_ENABLED setting (False by default) to enable HTTP cache middleware
- changed HTTPCACHE_EXPIRATION_SECS semantics: now zero means "never expire".
Deprecated/obsoleted functionality
- Deprecated runserver command in favor of server command which starts a Scrapyd server. See also: Scrapyd changes
- Deprecated queue command in favor of using Scrapyd schedule.json API. See also: Scrapyd changes
- Removed the !LxmlItemLoader (experimental contrib which never graduated to main contrib)
Scrapy 0.10
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features and improvements
- New Scrapy service called scrapyd for deploying Scrapy crawlers in production (#218) (documentation available)
- Simplified Images pipeline usage which doesn't require subclassing your own images pipeline now (#217)
- Scrapy shell now shows the Scrapy log by default (#206)
- Refactored execution queue in a common base code and pluggable backends called "spider queues" (#220)
- New persistent spider queue (based on SQLite) (#198), available by default, which allows to start Scrapy in server mode and then schedule spiders to run.
- Added documentation for Scrapy command-line tool and all its available sub-commands. (documentation available)
- Feed exporters with pluggable backends (#197) (documentation available)
- Deferred signals (#193)
- Added two new methods to item pipeline open_spider(), close_spider() with deferred support (#195)
- Support for overriding default request headers per spider (#181)
- Replaced default Spider Manager with one with similar functionality but not depending on Twisted Plugins (#186)
- Split Debian package into two packages - the library and the service (#187)
- Scrapy log refactoring (#188)
- New extension for keeping persistent spider contexts among different runs (#203)
- Added dont_redirect request.meta key for avoiding redirects (#233)
- Added dont_retry request.meta key for avoiding retries (#234)
Command-line tool changes
- New scrapy command which replaces the old scrapy-ctl.py (#199) - there is only one global scrapy command now, instead of one scrapy-ctl.py per project - Added scrapy.bat script for running more conveniently from Windows
- Added bash completion to command-line tool (#210)
- Renamed command start to runserver (#209)
API changes
- url and body attributes of Request objects are now read-only (#230)
- Request.copy() and Request.replace() now also copies their callback and errback attributes (#231)
- Removed UrlFilterMiddleware from scrapy.contrib (already disabled by default)
- Offsite middleware doesn't filter out any request coming from a spider that doesn't have a allowed_domains attribute (#225)
- Removed Spider Manager load() method. Now spiders are loaded in the __init__ method itself.
- Changes to Scrapy Manager (now called "Crawler"):
- scrapy.core.manager.ScrapyManager class renamed to scrapy.crawler.Crawler
- scrapy.core.manager.scrapymanager singleton moved to scrapy.project.crawler
- Moved module: scrapy.contrib.spidermanager to scrapy.spidermanager
- Spider Manager singleton moved from scrapy.spider.spiders to the spiders attribute of scrapy.project.crawler singleton.
- moved Stats Collector classes: (#204)
- scrapy.stats.collector.StatsCollector to scrapy.statscol.StatsCollector
- scrapy.stats.collector.SimpledbStatsCollector to scrapy.contrib.statscol.SimpledbStatsCollector
- default per-command settings are now specified in the default_settings attribute of command object class (#201)
- changed arguments of Item pipeline process_item() method from (spider, item) to (item, spider)
- backward compatibility kept (with deprecation warning)
- moved scrapy.core.signals module to scrapy.signals
- backward compatibility kept (with deprecation warning)
- moved scrapy.core.exceptions module to scrapy.exceptions
- backward compatibility kept (with deprecation warning)
- added handles_request() class method to BaseSpider
- dropped scrapy.log.exc() function (use scrapy.log.err() instead)
- dropped component argument of scrapy.log.msg() function
- dropped scrapy.log.log_level attribute
- Added from_settings() class methods to Spider Manager, and Item Pipeline Manager
Changes to settings
- Added HTTPCACHE_IGNORE_SCHEMES setting to ignore certain schemes on !HttpCacheMiddleware (#225)
- Added SPIDER_QUEUE_CLASS setting which defines the spider queue to use (#220)
- Added KEEP_ALIVE setting (#220)
- Removed SERVICE_QUEUE setting (#220)
- Removed COMMANDS_SETTINGS_MODULE setting (#201)
- Renamed REQUEST_HANDLERS to DOWNLOAD_HANDLERS and make download handlers classes (instead of functions)
Scrapy 0.9
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features and improvements
Added SMTP-AUTH support to scrapy.mail
New settings added: MAIL_USER, MAIL_PASS (:rev:`2065` | #149)
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Added new scrapy-ctl view command - To view URL in the browser, as seen by Scrapy (:rev:`2039`)
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Added web service for controlling Scrapy process (this also deprecates the web console. (:rev:`2053` | #167)
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Support for running Scrapy as a service, for production systems (:rev:`1988`, :rev:`2054`, :rev:`2055`, :rev:`2056`, :rev:`2057` | #168)
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Added wrapper induction library (documentation only available in source code for now). (:rev:`2011`)
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Simplified and improved response encoding support (:rev:`1961`, :rev:`1969`)
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Added LOG_ENCODING setting (:rev:`1956`, documentation available)
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Added RANDOMIZE_DOWNLOAD_DELAY setting (enabled by default) (:rev:`1923`, doc available)
System Message: ERROR/3 (<stdin>, line 9267); backlink
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MailSender is no longer IO-blocking (:rev:`1955` | #146)
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Linkextractors and new Crawlspider now handle relative base tag urls (:rev:`1960` | #148)
System Message: ERROR/3 (<stdin>, line 9269); backlink
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Several improvements to Item Loaders and processors (:rev:`2022`, :rev:`2023`, :rev:`2024`, :rev:`2025`, :rev:`2026`, :rev:`2027`, :rev:`2028`, :rev:`2029`, :rev:`2030`)
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Added support for adding variables to telnet console (:rev:`2047` | #165)
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Support for requests without callbacks (:rev:`2050` | #166)
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API changes
Change Spider.domain_name to Spider.name (SEP-012, :rev:`1975`)
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Response.encoding is now the detected encoding (:rev:`1961`)
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HttpErrorMiddleware now returns None or raises an exception (:rev:`2006` | #157)
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scrapy.command modules relocation (:rev:`2035`, :rev:`2036`, :rev:`2037`)
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System Message: ERROR/3 (<stdin>, line 9280); backlink
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Added ExecutionQueue for feeding spiders to scrape (:rev:`2034`)
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Removed ExecutionEngine singleton (:rev:`2039`)
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Ported S3ImagesStore (images pipeline) to use boto and threads (:rev:`2033`)
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Moved module: scrapy.management.telnet to scrapy.telnet (:rev:`2047`)
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Changes to default settings
Changed default SCHEDULER_ORDER to DFO (:rev:`1939`)
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Scrapy 0.8
The numbers like #NNN reference tickets in the old issue tracker (Trac) which is no longer available.
New features
Added DEFAULT_RESPONSE_ENCODING setting (:rev:`1809`)
System Message: ERROR/3 (<stdin>, line 9299); backlink
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Added dont_click argument to FormRequest.from_response() method (:rev:`1813`, :rev:`1816`)
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Added clickdata argument to FormRequest.from_response() method (:rev:`1802`, :rev:`1803`)
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Added support for HTTP proxies (HttpProxyMiddleware) (:rev:`1781`, :rev:`1785`)
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System Message: ERROR/3 (<stdin>, line 9302); backlink
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Offsite spider middleware now logs messages when filtering out requests (:rev:`1841`)
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Backward-incompatible changes
Changed scrapy.utils.response.get_meta_refresh() signature (:rev:`1804`)
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Removed deprecated scrapy.item.ScrapedItem class - use scrapy.item.Item instead (:rev:`1838`)
System Message: ERROR/3 (<stdin>, line 9309); backlink
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Removed deprecated scrapy.xpath module - use scrapy.selector instead. (:rev:`1836`)
System Message: ERROR/3 (<stdin>, line 9310); backlink
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Removed deprecated core.signals.domain_open signal - use core.signals.domain_opened instead (:rev:`1822`)
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- log.msg() now receives a spider argument (:rev:`1822`)
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- Old domain argument has been deprecated and will be removed in 0.9. For spiders, you should always use the spider argument and pass spider references. If you really want to pass a string, use the component argument instead.
Changed core signals domain_opened, domain_closed, domain_idle
- Changed Item pipeline to use spiders instead of domains
The domain argument of process_item() item pipeline method was changed to spider, the new signature is: process_item(spider, item) (:rev:`1827` | #105)
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To quickly port your code (to work with Scrapy 0.8) just use spider.domain_name where you previously used domain.
- Changed Stats API to use spiders instead of domains (:rev:`1849` | #113)
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- StatsCollector was changed to receive spider references (instead of domains) in its methods (set_value, inc_value, etc).
- added StatsCollector.iter_spider_stats() method
- removed StatsCollector.list_domains() method
- Also, Stats signals were renamed and now pass around spider references (instead of domains). Here's a summary of the changes:
- To quickly port your code (to work with Scrapy 0.8) just use spider.domain_name where you previously used domain. spider_stats contains exactly the same data as domain_stats.
- CloseDomain extension moved to scrapy.contrib.closespider.CloseSpider (:rev:`1833`)
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- Its settings were also renamed:
- CLOSEDOMAIN_TIMEOUT to CLOSESPIDER_TIMEOUT
- CLOSEDOMAIN_ITEMCOUNT to CLOSESPIDER_ITEMCOUNT
Removed deprecated SCRAPYSETTINGS_MODULE environment variable - use SCRAPY_SETTINGS_MODULE instead (:rev:`1840`)
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Renamed setting: REQUESTS_PER_DOMAIN to CONCURRENT_REQUESTS_PER_SPIDER (:rev:`1830`, :rev:`1844`)
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Unknown interpreted text role "rev".
Renamed setting: CONCURRENT_DOMAINS to CONCURRENT_SPIDERS (:rev:`1830`)
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Refactored HTTP Cache middleware
HTTP Cache middleware has been heavily refactored, retaining the same functionality except for the domain sectorization which was removed. (:rev:`1843` )
System Message: ERROR/3 (<stdin>, line 9332); backlink
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Renamed exception: DontCloseDomain to DontCloseSpider (:rev:`1859` | #120)
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Renamed extension: DelayedCloseDomain to SpiderCloseDelay (:rev:`1861` | #121)
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Removed obsolete scrapy.utils.markup.remove_escape_chars function - use scrapy.utils.markup.replace_escape_chars instead (:rev:`1865`)
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Scrapy 0.7
First release of Scrapy.