本文实例讲述了python登录豆瓣并发帖的方法。分享给大家供大家参考。具体如下：

这里涉及urllib、urllib2及cookielib常用方法的使用

登录豆瓣，由于有验证码，采取的办法是将验证码图片下载到同目录下，查看图片后输入验证码即可登录、发帖

帖子内容写死在代码中了 

# -- 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(\'\', 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(\'\' ,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(\'\', html) 
        p[\"topic_id\"] = m.group(1)
        m= re.search(\'\', 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))

希望本文所述对大家的Python程序设计有所帮助。