#coding:utf8import urllib2import urllibimport jsonimport stringimport randomclass WebChat(object):    def __init__(self, appid=None, secret=None, code=None):        self.appid = appid        self.secret = secret        self.code = code    def token_url(self):        return "https://api.weixin.QQ.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s"                % (self.appid, self.secret)    def get_access_token(self):        access_token_url = self.token_url()        f = urllib2.urlopen(access_token_url)        json_string = f.read()        return json.loads(json_string)['access_token']    def get_ticket_url(self):        access_token = self.get_access_token()        url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=%s" %(access_token)        return url    def get_ticket(self):    	body={                "action_name": "QR_LIMIT_SCENE",                 "action_info": {                "