python实现登录豆瓣发帖的实例分享

# -- coding:gbk --
import sys, time, os, re
import urllib, urllib2, cookielib
loginurl = 'https://www.douban.com/accounts/login'
cookie = cookielib.CookieJar()
opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie))
params = {
"form_email":"your email",
"form_password":"your password",
"source":"index_nav" #没有的话登录不成功
}
#从首页提交登录
response=opener.open(loginurl, urllib.urlencode(params))
#验证成功跳转至登录页
if response.geturl() == "https://www.douban.com/accounts/login":
 html=response.read()
 #验证码图片地址
 imgurl=re.search('<img id="captcha_image" src="(.+?)" alt="captcha" class="captcha_image"/>', html)
 if imgurl:
  url=imgurl.group(1)
  #将图片保存至同目录下
  res=urllib.urlretrieve(url, 'v.jpg')
  #获取captcha-id参数
  captcha=re.search('<input type="hidden" name="captcha-id" value="(.+?)"/>' ,html)
  if captcha:
   vcode=raw_input('请输入图片上的验证码：')
   params["captcha-solution"] = vcode
   params["captcha-id"] = captcha.group(1)
   params["user_login"] = "登录"
   #提交验证码验证
   response=opener.open(loginurl, urllib.urlencode(params))
   ''' 登录成功跳转至首页 '''
   if response.geturl() == "http://www.douban.com/":
    print 'login success ! '
    print '准备进行发帖'
    p={"ck":""}
    c = [c.value for c in list(cookie) if c.name == 'ck']
    if len(c) > 0:
     p["ck"] = c[0].strip('"')  
    addtopicurl="http://www.douban.com/group/python/new_topic"
    res=opener.open(addtopicurl)
    html=res.read()
    m= re.search('<input type="hidden" name="topic_id" value="(.+?)">', html) 
    p["topic_id"] = m.group(1)
    m= re.search('<input type="hidden" name="topic_id_sig" value="(.+?)">', html) 
    p["topic_id_sig"] = m.group(1)
    p["rev_title"] = 'title'
    p["rev_text"] = 'send body'
    p["rev_submit"] = '好了，发言'
    request=urllib2.Request(addtopicurl)
    request.add_header("User-Agent","Mozilla/5.0 (Windows NT 6.1) AppleWebKit/536.11 (KHTML, like Gecko) Chrome/20.0.1132.57 Safari/536.11")
    request.add_header("Accept-Charset", "GBK,utf-8;q=0.7,*;q=0.3")
    request.add_header("Origin", "http://www.douban.com")
    request.add_header("Referer", "http://www.douban.com/group/python/new_topic")
    opener.open(request, urllib.urlencode(p))