登陆Discuz!类型论坛的通用python代码

#coding:gbk
import urllib2,urllib,cookielib,re

'''
  通用的登陆DZ论坛
  参数说明parms:
      username:用户名(必填),
      password :密码(必填),
      domain:网站域名，注意格式必须是：http://www.xxx.xx/(必填),
      answer:问题答案,
      questionid:问题ID,
      referer:跳转地址
      
  这里使用了可变关键字参数(相关信息可参考手册)
'''
def login_dz(**parms):

    #初始化
    parms_key = ['domain','answer','password','questionid','referer','username']
    arg = {}
    for key in parms_key:
        if key in parms:
            arg[key] = parms[key]
        else:
            arg[key] = ''
            
    #cookie设置
    cookieFile = './kan_cookies.dat'
    cookie = cookielib.LWPCookieJar()
    opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie))

    #获取formhash
    pre_login = arg['domain']+'member.php?mod=logging&action=login&infloat=yes&handlekey=login&inajax=1&ajaxtarget=fwin_content_login'
    c = opener.open(pre_login).read()
    cookie.save(cookieFile)
    patt = re.compile(r'.*?name="formhash".*?value="(.*?)".*?')
    formhash = patt.search(c)
    if not formhash:
        raise Exception('GET formhash Fail!')
    formhash = formhash.group(1)

    #登陆
    postdata = {
     'answer':arg['answer'],
     'formhash':formhash,
     'password':arg['password'],
     'questionid':0 if arg['questionid']=='' else arg['questionid'],
     'referer':arg['domain'] if arg['referer']=='' else arg['referer'],
     'username':arg['username'],
        }

    postdata = urllib.urlencode(postdata)
    req = urllib2.Request(
        url= arg['domain']+'member.php?mod=logging&action=login&loginsubmit=yes&handlekey=login&loginhash=LCaB3&inajax=1',
        data=postdata
        )
    c = opener.open(req).read(300)
    flag = '登陆失败 %s'%arg['username']
    if 'succeedhandle_login' in c:
        flag = True
    return flag


#使用例子：基本参数登陆
user='xxx'
pwd='xxx'
dom='http://www.discuz.net/' #另一个测试网站：http://www.kafan.cn/
try:
    flag = login_dz(username=user,password=pwd,domain=dom)
    print(flag)
except Exception,e:
    print('Error:',e)

#关于Http请求，参 fc-lamp.blog.163.com
#关于python运算符的使用，参