代碼如下:
#_*_coding:utf_8_

from sgmllib import SGMLParser
import sys, urllib2, urllib, cookielib
import datetime, time

class spider(SGMLParser):

    def __init__(self, email, password):
        SGMLParser.__init__(self)

        self.email = email
        self.password = password
        self.domain = 'renren.com'

        try:
            cookie = cookielib.CookieJar()
            # a class to handle HTTP cookies
            cookieProc = urllib2.HTTPCookieProcessor(cookie)
        except:
            raise
        else:
            opener = urllib2.build_opener(cookieProc)
            urllib2.install_opener(opener)      

    def login(self):
        print '開始登錄'
        url = 'http://www.renren.com/PLogin.do'
        #url = 'http://www.renren.com/SysHome.do'
        postdata = {
                    'email': self.email,
                    'password': self.password,
                    'domain': self.domain 
                   }
        # 一般情況下引入urllib2的地方都需要引入urllib,因為需要urlencode()
        req = urllib2.Request(
                              url,
                              urllib.urlencode(postdata)           
                             )

        self.file = urllib2.urlopen(req).read()