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Release notes

0.20 (not released yet)

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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Dropped libxml2 selectors backend
Dropped support for multiple selectors backends, sticking to lxml only
Selector Unified API with support for CSS expressions (:issue:`395` and :issue:`426`)

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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 lazyness and early hangs (:commit:`89faf52`)

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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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0.18.2 (released 2013-09-03)

Backport scrapy check command fixes and backward compatible multi crawler process(:issue:`339`)

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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 losts 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 contributters list format (:commit:`0b60031`)

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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 crawleable 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` 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 MetaRefreshMiddldeware that handles meta-refresh html tag redirections,
MetaRefreshMiddldeware and RedirectMiddleware have different priorities to address #62
added from_crawler method to spiders
added system tests with mock server
more improvements to Mac OS 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@...>

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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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 occured, 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 Practies (: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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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 mac os 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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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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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 backwards 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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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, backwards compatibility is kept on the Stats Collector API and signals.
added :meth:`~scrapy.contrib.spidermiddleware.SpiderMiddleware.process_start_requests` method to spider middlewares

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dropped Signals singleton. Signals should now be accesed through the Crawler.signals attribute. See the signals documentation for more info.
dropped Signals singleton. Signals should now be accesed 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 mdule
dropped support for Python 2.5. See http://blog.scrapy.org/scrapy-dropping-support-for-python-25
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 constructor

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replaced memory usage acounting 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

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/d/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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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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dont 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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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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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`)

System Message: ERROR/3 (<stdin>, line 293); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 296); backlink

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allow spider to set autothrottle max concurrency (:commit:`175a4b5`)

System Message: ERROR/3 (<stdin>, line 297); backlink

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0.14

New features and settings

Support for AJAX crawleable urls
New persistent scheduler that stores requests on disk, allowing to suspend and resume crawls (:rev:`2737`)

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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`)

System Message: ERROR/3 (<stdin>, line 310); backlink

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Added marshal to formats supported by feed exports (:rev:`2744`)

System Message: ERROR/3 (<stdin>, line 311); backlink

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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`)
System Message: ERROR/3 (<stdin>, line 315); backlink

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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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  System Message: ERROR/3 (<stdin>, line 315); backlink
  
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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`)

System Message: ERROR/3 (<stdin>, line 318); backlink

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System Message: ERROR/3 (<stdin>, line 318); backlink

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Moved spider queues to scrapyd: scrapy.spiderqueue -> scrapyd.spiderqueue (:rev:`2708`)

System Message: ERROR/3 (<stdin>, line 319); backlink

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Moved sqlite utils to scrapyd: scrapy.utils.sqlite -> scrapyd.sqlite (:rev:`2781`)

System Message: ERROR/3 (<stdin>, line 320); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 321); backlink

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Added :setting:`REDIRECT_ENABLED` setting to quickly enable/disable the redirect middleware (:rev:`2697`)

System Message: ERROR/3 (<stdin>, line 322); backlink

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Added :setting:`RETRY_ENABLED` setting to quickly enable/disable the retry middleware (:rev:`2694`)

System Message: ERROR/3 (<stdin>, line 323); backlink

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System Message: ERROR/3 (<stdin>, line 323); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 325); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 326); backlink

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Added SitemapSpider (see documentation in Spiders page) (:rev:`2658`)

System Message: ERROR/3 (<stdin>, line 327); backlink

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Added LogStats extension for periodically logging basic stats (like crawled pages and scraped items) (:rev:`2657`)

System Message: ERROR/3 (<stdin>, line 328); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 330); backlink

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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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System Message: ERROR/3 (<stdin>, line 331); backlink

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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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System Message: ERROR/3 (<stdin>, line 334); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 338); backlink

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CsvItemExporter: added join_multivalued parameter (:rev:`2578`)

System Message: ERROR/3 (<stdin>, line 339); backlink

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Added namespace support to xmliter_lxml (:rev:`2552`)

System Message: ERROR/3 (<stdin>, line 340); backlink

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Improved cookies middleware by making COOKIES_DEBUG nicer and documenting it (:rev:`2579`)

System Message: ERROR/3 (<stdin>, line 341); backlink

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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`)
System Message: ERROR/3 (<stdin>, line 350); backlink

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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`)
  
  System Message: ERROR/3 (<stdin>, line 353); backlink
  
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- scrapely (was scrapy.contrib.ibl, done in :rev:`2586`)
  
  System Message: ERROR/3 (<stdin>, line 354); backlink
  
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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`)

System Message: ERROR/3 (<stdin>, line 358); backlink

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Removed scheduler middleware to simplify architecture. Duplicates filter is now done in the scheduler itself, using the same dupe fltering class as before (DUPEFILTER_CLASS setting) (:rev:`2640`)

System Message: ERROR/3 (<stdin>, line 359); backlink

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Removed support for passing urls to scrapy crawl command (use scrapy parse instead) (:rev:`2704`)

System Message: ERROR/3 (<stdin>, line 360); backlink

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Removed deprecated Execution Queue (:rev:`2704`)

System Message: ERROR/3 (<stdin>, line 361); backlink

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Removed (undocumented) spider context extension (from scrapy.contrib.spidercontext) (:rev:`2780`)

System Message: ERROR/3 (<stdin>, line 362); backlink

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removed CONCURRENT_SPIDERS setting (use scrapyd maxproc instead) (:rev:`2789`)

System Message: ERROR/3 (<stdin>, line 363); backlink

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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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System Message: ERROR/3 (<stdin>, line 364); backlink

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Renamed setting CLOSESPIDER_ITEMPASSED to :setting:`CLOSESPIDER_ITEMCOUNT` (:rev:`2655`). Backwards compatibility kept.

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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` (#273)

System Message: ERROR/3 (<stdin>, line 375); backlink

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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)

System Message: ERROR/3 (<stdin>, line 386); backlink

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Added :setting:`CLOSESPIDER_ERRORCOUNT` setting (#254)

System Message: ERROR/3 (<stdin>, line 387); backlink

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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 lastest 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)

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)
Splitted 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 middelware 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 constructor 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)
- backwards compatibility kept (with deprecation warning)
moved scrapy.core.signals module to scrapy.signals
- backwards compatibility kept (with deprecation warning)
moved scrapy.core.exceptions module to scrapy.exceptions
- backwards 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)

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`)

System Message: ERROR/3 (<stdin>, line 493); backlink

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Added web service for controlling Scrapy process (this also deprecates the web console. (:rev:`2053` | #167)

System Message: ERROR/3 (<stdin>, line 494); backlink

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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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System Message: ERROR/3 (<stdin>, line 495); backlink

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System Message: ERROR/3 (<stdin>, line 495); backlink

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System Message: ERROR/3 (<stdin>, line 495); backlink

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Added wrapper induction library (documentation only available in source code for now). (:rev:`2011`)

System Message: ERROR/3 (<stdin>, line 496); backlink

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Simplified and improved response encoding support (:rev:`1961`, :rev:`1969`)

System Message: ERROR/3 (<stdin>, line 497); backlink

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System Message: ERROR/3 (<stdin>, line 497); backlink

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Added LOG_ENCODING setting (:rev:`1956`, documentation available)

System Message: ERROR/3 (<stdin>, line 498); backlink

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Added RANDOMIZE_DOWNLOAD_DELAY setting (enabled by default) (:rev:`1923`, doc available)

System Message: ERROR/3 (<stdin>, line 499); 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 501); 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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System Message: ERROR/3 (<stdin>, line 502); backlink

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System Message: ERROR/3 (<stdin>, line 502); backlink

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System Message: ERROR/3 (<stdin>, line 502); backlink

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System Message: ERROR/3 (<stdin>, line 502); backlink

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System Message: ERROR/3 (<stdin>, line 502); backlink

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Added support for adding variables to telnet console (:rev:`2047` | #165)

System Message: ERROR/3 (<stdin>, line 503); backlink

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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)

System Message: ERROR/3 (<stdin>, line 511); backlink

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scrapy.command modules relocation (:rev:`2035`, :rev:`2036`, :rev:`2037`)

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System Message: ERROR/3 (<stdin>, line 512); backlink

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System Message: ERROR/3 (<stdin>, line 512); backlink

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Added ExecutionQueue for feeding spiders to scrape (:rev:`2034`)

System Message: ERROR/3 (<stdin>, line 513); backlink

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Removed ExecutionEngine singleton (:rev:`2039`)

System Message: ERROR/3 (<stdin>, line 514); backlink

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Ported S3ImagesStore (images pipeline) to use boto and threads (:rev:`2033`)

System Message: ERROR/3 (<stdin>, line 515); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 521); backlink

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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`)

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Added dont_click argument to FormRequest.from_response() method (:rev:`1813`, :rev:`1816`)

System Message: ERROR/3 (<stdin>, line 532); backlink

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System Message: ERROR/3 (<stdin>, line 532); backlink

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Added clickdata argument to FormRequest.from_response() method (:rev:`1802`, :rev:`1803`)

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System Message: ERROR/3 (<stdin>, line 533); backlink

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Added support for HTTP proxies (HttpProxyMiddleware) (:rev:`1781`, :rev:`1785`)

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System Message: ERROR/3 (<stdin>, line 534); backlink

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Offiste spider middleware now logs messages when filtering out requests (:rev:`1841`)

System Message: ERROR/3 (<stdin>, line 535); backlink

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Backwards-incompatible changes

Changed scrapy.utils.response.get_meta_refresh() signature (:rev:`1804`)

System Message: ERROR/3 (<stdin>, line 540); backlink

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Removed deprecated scrapy.item.ScrapedItem class - use scrapy.item.Item instead (:rev:`1838`)

System Message: ERROR/3 (<stdin>, line 541); backlink

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Removed deprecated scrapy.xpath module - use scrapy.selector instead. (:rev:`1836`)

System Message: ERROR/3 (<stdin>, line 542); backlink

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Removed deprecated core.signals.domain_open signal - use core.signals.domain_opened instead (:rev:`1822`)

System Message: ERROR/3 (<stdin>, line 543); backlink

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log.msg() now receives a spider argument (:rev:`1822`)
System Message: ERROR/3 (<stdin>, line 544); backlink

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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)
  
  System Message: ERROR/3 (<stdin>, line 548); backlink
  
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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)
System Message: ERROR/3 (<stdin>, line 554); backlink

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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`)
System Message: ERROR/3 (<stdin>, line 558); backlink

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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`)

System Message: ERROR/3 (<stdin>, line 560); backlink

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Renamed setting: REQUESTS_PER_DOMAIN to CONCURRENT_REQUESTS_PER_SPIDER (:rev:`1830`, :rev:`1844`)

System Message: ERROR/3 (<stdin>, line 561); backlink

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System Message: ERROR/3 (<stdin>, line 561); backlink

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Renamed setting: CONCURRENT_DOMAINS to CONCURRENT_SPIDERS (:rev:`1830`)

System Message: ERROR/3 (<stdin>, line 562); backlink

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Refactored HTTP Cache middleware
HTTP Cache middleware has been heavilty refactored, retaining the same functionality except for the domain sectorization which was removed. (:rev:`1843` )

System Message: ERROR/3 (<stdin>, line 564); backlink

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Renamed exception: DontCloseDomain to DontCloseSpider (:rev:`1859` | #120)

System Message: ERROR/3 (<stdin>, line 565); backlink

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Renamed extension: DelayedCloseDomain to SpiderCloseDelay (:rev:`1861` | #121)

System Message: ERROR/3 (<stdin>, line 566); backlink

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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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0.7

First release of Scrapy.

</html>

34 KiB Raw Blame History

Release notes

0.20 (not released yet)

0.18.4 (released 2013-10-10)

0.18.3 (released 2013-10-03)

0.18.2 (released 2013-09-03)

0.18.1 (released 2013-08-27)

0.18.0 (released 2013-08-09)

0.16.5 (released 2013-05-30)

0.16.4 (released 2013-01-23)

0.16.3 (released 2012-12-07)

0.16.2 (released 2012-11-09)

0.16.1 (released 2012-10-26)

0.16.0 (released 2012-10-18)

0.14.4

0.14.3

0.14.2

0.14.1

0.14

New features and settings

Code rearranged and removed

0.12

New features and improvements

Scrapyd changes

Changes to settings

Deprecated/obsoleted functionality

0.10

New features and improvements

Command-line tool changes

API changes

Changes to settings

0.9

New features and improvements

API changes

Changes to default settings

0.8

New features

Backwards-incompatible changes

0.7

34 KiB

Raw Blame History