python实现自动登录人人网并访问最近来访者实例，python自动登录

##-*- coding : gbk -*- 
#在 
import os 
from xml.dom import minidom  
import re  
import urllib  
import urllib2  
import cookielib  
import datetime 
import time 
from urllib2 import URLError,HTTPError 
#登录模块　在网上找的 
def renren_login(logfile,username,password): 
  logfile.write(str(datetime.datetime.now()) + ' renren/r/n') 
  cj = cookielib.CookieJar() 
  post_data = urllib.urlencode( 
    {'email':username, 
     'password':password, 
    } 
    ) 
  path = 'http://www.renren.com/PLogin.do' 
  opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj)) 
  urllib2.install_opener(opener) 
  req = urllib2.Request(path,post_data) 
   
  try: 
    conn = urllib2.urlopen(req) 
  except URLError,e: 
    print 'URLError' 
    logfile.write('URLError:' + str(e.code) + '/r/n') 
    return False 
  except HTTPError,e:   
    logfile.write('HTTP Error:'+e.reason + '/r/n') 
    return False 
  if conn.geturl() == 'http://www.renren.com/home': 
    print 'success' 
    logfile.write('Task finished/r/n') 
    open('login_renren.html','w').write(conn.read()) 
    return conn.read() 
  else: 
    print 'Task Failed' 
    logfile.write('Task failed/r/n') 
#生成的登录日志文件     
file_object = open("log.txt",'w')     
login_index = renren_login(file_object,'用户名','密码')　#这地方换成登录的用户名和密码  
 
#parse　解析网页 
r1 = re.compile('''''http://www.renren.com/profile.do\?portal=homeFootprint&ref=home_footprint&id=\d{9}''') 
li = r1.findall(open("login_renren.html","r").read()) 
#将解析到的最近来访的地址放入字典中
url_dict ={}for item in li: print item url_dict.setdefault(item) 
#访问最近来访者
for item in url_dict.iterkeys(): os.startfile(item)