Scrapy is a fast high-level screen scraping and web crawling framework, used to crawl websites and extract structured data from their pages. It can be used for a wide range of purposes, from data mining to monitoring and automated testing.
For more information including a list of features check the Scrapy homepage at: http://scrapy.org
- Python 2.6 or up
- Works on Linux, Windows, Mac OSX, BSD
The quick way:
pip install scrapyFor more details see the install section in the documentation: http://doc.scrapy.org/en/latest/intro/install.html
You can download the latest stable and development releases from: http://scrapy.org/download/
Documentation is available online at http://doc.scrapy.org/ and in the docs directory.
See http://scrapy.org/community/
See http://doc.scrapy.org/en/latest/contributing.html
See http://scrapy.org/companies/
See http://scrapy.org/support/
About avoid getting banned: ========================== GoogleCacheMiddleware ===================== this is a downloadmiddle to avoid getting banned,you can set the GOOGLE_CACHE_DOMAINS variable or you can set the user_agent_list attribute in your spider to define what domain you will use to visit the google cache,it is a list,eg:GOOGLE_CACHE_DOMAINS = ['www.woaidu.org',]
RotateUserAgentMiddleware: ========================= this is also a downloadmiddleware to avoid getting banned,you can set the USER_AGENT_LIST in settings,then the middleware will random choose one of them as the user-agent,if you don't define it,then it will use the default user-aget,it contains chrome,I E,firefox,Mozilla,opera,netscape.
* for GoogleCacheMiddleware: add "scrapy.contrib.downloadermiddleware.google_cache.GoogleCacheMiddleware":50 in your DOWNLOADER_MIDDLEWARES,and define GOOGLE_CACHE_DOMAINSin your settings,eg: ['www.woaidu.org',]
* for RotateUserAgentMiddleware add 'scrapy.contrib.downloadermiddleware.useragent.UserAgentMiddleware': None, 'woaidu_crawler.contrib.downloadmiddleware.rotate_useragent.RotateUserAgentMiddleware' :400, in your DOWNLOADER_MIDDLEWARES.