Python ve Cookies Kullanımı

Code:

import urllib2
import urllib
import re
from cookielib import CookieJar, DefaultCookiePolicy
cj = CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(self.cj))
r = opener.open("loginposturlsiniyazin",urllib.urlencode({'user_name':"username","password":"xxxx"}))
print r.read()