使用urllib2发布数据、遵循重定向和维护cookie

首先,机械化: http://wwwsearch.sourceforge.net/mechanize/
您可以只使用urllib2来完成这类工作,但是您将要编写大量的样板代码,而且会出现bug。

import mechanize

br = mechanize.Browser()
br.open('http://somesite.com/account/signin/')

br.select_form('loginForm')    
br['username'] = 'jekyll'
br['password'] = 'bananas'
br.submit()
# At this point, you're logged in, redirected, and the 
#  br object has the cookies and all that.

br.geturl() # e.g. http://somesite.com/loggedin/

然后可以使用浏览器对象 br