这是一个python通过urllib直接登陆网站，并处理网站的session和cookie

import cookielib, urllib, urllib2     login = 'ismellbacon123@yahoo.com'  password = 'login'     # Enable cookie support for urllib2  cookiejar = cookielib.CookieJar()  urlOpener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookiejar))     # Send login/password to the site and get the session cookie  values = {'login':login, 'password':password }  data = urllib.urlencode(values)  request = urllib2.Request("http://www.imdb.com/register/login", data)  url = urlOpener.open(request)  # Our cookiejar automatically receives the cookies  page = url.read(500000)     # Make sure we are logged in by checking the presence of the cookie "id".  # (which is the cookie containing the session identifier.)  if not 'id' in [cookie.name for cookie in cookiejar]:      raise ValueError, "Login failed with login=%s, password=%s" % (login,password)     print "We are logged in !"     # Make another request with our session cookie  # (Our urlOpener automatically uses cookies from our cookiejar)  url = urlOpener.open('http://imdb.com/find?s=all&q=grave')  page = url.read(200000)