mirror of https://github.com/scrapy/scrapy.git
258 lines
7.5 KiB
Python
258 lines
7.5 KiB
Python
"""
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This module contains the default values for all settings used by Scrapy.
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For more information about these settings you can read the settings
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documentation in docs/topics/settings.rst
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Scrapy developers, if you add a setting here remember to:
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* add it in alphabetical order
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* group similar settings without leaving blank lines
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* add its documentation to the available settings documentation
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(docs/topics/settings.rst)
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"""
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import os
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import sys
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from importlib import import_module
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from os.path import join, abspath, dirname
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AJAXCRAWL_ENABLED = False
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BOT_NAME = 'scrapybot'
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CLOSESPIDER_TIMEOUT = 0
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CLOSESPIDER_PAGECOUNT = 0
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CLOSESPIDER_ITEMCOUNT = 0
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CLOSESPIDER_ERRORCOUNT = 0
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COMMANDS_MODULE = ''
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COMPRESSION_ENABLED = True
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CONCURRENT_ITEMS = 100
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CONCURRENT_REQUESTS = 16
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CONCURRENT_REQUESTS_PER_DOMAIN = 8
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CONCURRENT_REQUESTS_PER_IP = 0
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COOKIES_ENABLED = True
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COOKIES_DEBUG = False
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DEFAULT_ITEM_CLASS = 'scrapy.item.Item'
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DEFAULT_REQUEST_HEADERS = {
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'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
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'Accept-Language': 'en',
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}
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DEPTH_LIMIT = 0
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DEPTH_STATS = True
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DEPTH_PRIORITY = 0
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DNSCACHE_ENABLED = True
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DNSCACHE_SIZE = 10000
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DNS_TIMEOUT = 60
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DOWNLOAD_DELAY = 0
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DOWNLOAD_HANDLERS = {}
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DOWNLOAD_HANDLERS_BASE = {
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'file': 'scrapy.core.downloader.handlers.file.FileDownloadHandler',
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'http': 'scrapy.core.downloader.handlers.http.HTTPDownloadHandler',
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'https': 'scrapy.core.downloader.handlers.http.HTTPDownloadHandler',
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's3': 'scrapy.core.downloader.handlers.s3.S3DownloadHandler',
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'ftp': 'scrapy.core.downloader.handlers.ftp.FTPDownloadHandler',
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}
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DOWNLOAD_TIMEOUT = 180 # 3mins
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DOWNLOAD_MAXSIZE = 1024*1024*1024 # 1024m
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DOWNLOAD_WARNSIZE = 32*1024*1024 # 32m
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DOWNLOADER = 'scrapy.core.downloader.Downloader'
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DOWNLOADER_HTTPCLIENTFACTORY = 'scrapy.core.downloader.webclient.ScrapyHTTPClientFactory'
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DOWNLOADER_CLIENTCONTEXTFACTORY = 'scrapy.core.downloader.contextfactory.ScrapyClientContextFactory'
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DOWNLOADER_MIDDLEWARES = {}
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DOWNLOADER_MIDDLEWARES_BASE = {
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# Engine side
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'scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware': 100,
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'scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware': 300,
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'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware': 350,
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'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware': 400,
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'scrapy.downloadermiddlewares.retry.RetryMiddleware': 500,
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'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware': 550,
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'scrapy.downloadermiddlewares.ajaxcrawl.AjaxCrawlMiddleware': 560,
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'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware': 580,
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'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware': 590,
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'scrapy.downloadermiddlewares.redirect.RedirectMiddleware': 600,
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'scrapy.downloadermiddlewares.cookies.CookiesMiddleware': 700,
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'scrapy.downloadermiddlewares.httpproxy.HttpProxyMiddleware': 750,
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'scrapy.downloadermiddlewares.chunked.ChunkedTransferMiddleware': 830,
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'scrapy.downloadermiddlewares.stats.DownloaderStats': 850,
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'scrapy.downloadermiddlewares.httpcache.HttpCacheMiddleware': 900,
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# Downloader side
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}
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DOWNLOADER_STATS = True
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DUPEFILTER_CLASS = 'scrapy.dupefilter.RFPDupeFilter'
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try:
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EDITOR = os.environ['EDITOR']
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except KeyError:
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if sys.platform == 'win32':
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EDITOR = '%s -m idlelib.idle'
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else:
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EDITOR = 'vi'
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EXTENSIONS = {}
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EXTENSIONS_BASE = {
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'scrapy.extensions.corestats.CoreStats': 0,
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'scrapy.telnet.TelnetConsole': 0,
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'scrapy.extensions.memusage.MemoryUsage': 0,
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'scrapy.extensions.memdebug.MemoryDebugger': 0,
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'scrapy.extensions.closespider.CloseSpider': 0,
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'scrapy.extensions.feedexport.FeedExporter': 0,
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'scrapy.extensions.logstats.LogStats': 0,
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'scrapy.extensions.spiderstate.SpiderState': 0,
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'scrapy.extensions.throttle.AutoThrottle': 0,
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}
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FEED_URI = None
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FEED_URI_PARAMS = None # a function to extend uri arguments
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FEED_FORMAT = 'jsonlines'
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FEED_STORE_EMPTY = False
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FEED_EXPORT_FIELDS = None
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FEED_STORAGES = {}
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FEED_STORAGES_BASE = {
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'': 'scrapy.extensions.feedexport.FileFeedStorage',
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'file': 'scrapy.extensions.feedexport.FileFeedStorage',
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'stdout': 'scrapy.extensions.feedexport.StdoutFeedStorage',
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's3': 'scrapy.extensions.feedexport.S3FeedStorage',
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'ftp': 'scrapy.extensions.feedexport.FTPFeedStorage',
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}
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FEED_EXPORTERS = {}
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FEED_EXPORTERS_BASE = {
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'json': 'scrapy.exporters.JsonItemExporter',
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'jsonlines': 'scrapy.exporters.JsonLinesItemExporter',
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'jl': 'scrapy.exporters.JsonLinesItemExporter',
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'csv': 'scrapy.exporters.CsvItemExporter',
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'xml': 'scrapy.exporters.XmlItemExporter',
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'marshal': 'scrapy.exporters.MarshalItemExporter',
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'pickle': 'scrapy.exporters.PickleItemExporter',
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}
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HTTPCACHE_ENABLED = False
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HTTPCACHE_DIR = 'httpcache'
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HTTPCACHE_IGNORE_MISSING = False
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HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
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HTTPCACHE_EXPIRATION_SECS = 0
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HTTPCACHE_IGNORE_HTTP_CODES = []
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HTTPCACHE_IGNORE_SCHEMES = ['file']
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HTTPCACHE_DBM_MODULE = 'anydbm'
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HTTPCACHE_POLICY = 'scrapy.extensions.httpcache.DummyPolicy'
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HTTPCACHE_GZIP = False
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ITEM_PROCESSOR = 'scrapy.pipelines.ItemPipelineManager'
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ITEM_PIPELINES = {}
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ITEM_PIPELINES_BASE = {}
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LOG_ENABLED = True
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LOG_ENCODING = 'utf-8'
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LOG_FORMATTER = 'scrapy.logformatter.LogFormatter'
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LOG_FORMAT = '%(asctime)s [%(name)s] %(levelname)s: %(message)s'
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LOG_DATEFORMAT = '%Y-%m-%d %H:%M:%S%z'
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LOG_STDOUT = False
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LOG_LEVEL = 'DEBUG'
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LOG_FILE = None
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LOG_UNSERIALIZABLE_REQUESTS = False
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LOGSTATS_INTERVAL = 60.0
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MAIL_HOST = 'localhost'
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MAIL_PORT = 25
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MAIL_FROM = 'scrapy@localhost'
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MAIL_PASS = None
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MAIL_USER = None
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MEMDEBUG_ENABLED = False # enable memory debugging
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MEMDEBUG_NOTIFY = [] # send memory debugging report by mail at engine shutdown
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MEMUSAGE_ENABLED = False
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MEMUSAGE_LIMIT_MB = 0
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MEMUSAGE_NOTIFY_MAIL = []
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MEMUSAGE_REPORT = False
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MEMUSAGE_WARNING_MB = 0
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METAREFRESH_ENABLED = True
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METAREFRESH_MAXDELAY = 100
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NEWSPIDER_MODULE = ''
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RANDOMIZE_DOWNLOAD_DELAY = True
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REACTOR_THREADPOOL_MAXSIZE = 10
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REDIRECT_ENABLED = True
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REDIRECT_MAX_TIMES = 20 # uses Firefox default setting
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REDIRECT_PRIORITY_ADJUST = +2
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REFERER_ENABLED = True
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RETRY_ENABLED = True
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RETRY_TIMES = 2 # initial response + 2 retries = 3 requests
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RETRY_HTTP_CODES = [500, 502, 503, 504, 400, 408]
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RETRY_PRIORITY_ADJUST = -1
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ROBOTSTXT_OBEY = False
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SCHEDULER = 'scrapy.core.scheduler.Scheduler'
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SCHEDULER_DISK_QUEUE = 'scrapy.squeue.PickleLifoDiskQueue'
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SCHEDULER_MEMORY_QUEUE = 'scrapy.squeue.LifoMemoryQueue'
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SPIDER_LOADER_CLASS = 'scrapy.spiderloader.SpiderLoader'
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SPIDER_MIDDLEWARES = {}
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SPIDER_MIDDLEWARES_BASE = {
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# Engine side
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'scrapy.spidermiddlewares.httperror.HttpErrorMiddleware': 50,
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'scrapy.spidermiddlewares.offsite.OffsiteMiddleware': 500,
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'scrapy.spidermiddlewares.referer.RefererMiddleware': 700,
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'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware': 800,
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'scrapy.spidermiddlewares.depth.DepthMiddleware': 900,
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# Spider side
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}
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SPIDER_MODULES = []
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STATS_CLASS = 'scrapy.statscol.MemoryStatsCollector'
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STATS_DUMP = True
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STATSMAILER_RCPTS = []
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TEMPLATES_DIR = abspath(join(dirname(__file__), '..', 'templates'))
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URLLENGTH_LIMIT = 2083
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USER_AGENT = 'Scrapy/%s (+http://scrapy.org)' % import_module('scrapy').__version__
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TELNETCONSOLE_ENABLED = 1
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TELNETCONSOLE_PORT = [6023, 6073]
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TELNETCONSOLE_HOST = '127.0.0.1'
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SPIDER_CONTRACTS = {}
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SPIDER_CONTRACTS_BASE = {
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'scrapy.contracts.default.UrlContract': 1,
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'scrapy.contracts.default.ReturnsContract': 2,
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'scrapy.contracts.default.ScrapesContract': 3,
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}
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