python 微信推送模板消息

#!/usr/bin/env python
#-*- coding: utf-8 -*-

import httplib
import json
import MySQLdb

#从数据库中获取access_token
access_token=""
try:
    conn=MySQLdb.connect(host='192.168.1.1',user='root',passwd='root',db='db_weixin',port=3306)
    cur=conn.cursor()
    cur.execute('select access_token from weixin_public')
    result=cur.fetchone()
    #print result
    #print result[0]
    access_token=result[0]
    cur.close()
    conn.close()
except MySQLdb.Error,e:
    print "Mysql Error %d: %s" % (e.args[0], e.args[1])

#根据接口推送消息
if not access_token is None:
    conn = httplib.HTTPConnection("api.weixin.qq.com:80")#微信接口链接
    headers = {"Content-type":"application/json"} #application/x-www-form-urlencoded
    params = ({'touser' : "oEGZ4johnKOtayJbnEVeuaZr6zQ0",#用户openid
    'template_id' : 'AtFuydv8k_15UGZuFntaBzJRCsHCkjNm1dcWD3A-11Y',#模板消息ID
    'url' : 'http://www.710.so',#跳转链接
    "topcolor" : "#667F00",#颜色
    "data" : {#模板内容
        "first" : {"value" : "尊敬的710.so : 您的网站http://www.710.so (192.168.1.1) 有异常访问", "color" : "#173177"},
        "keyword1" : {"value" : "访问时间 2015-04-05 15:30:59 访问IP 192.168.1.2", "color" : "#173177"},
        "keyword2" : {"value" : "访问链接 http://www.710.so", "color" : "#173177"},
        "remark" : {"value" : "访问频率 10/s", "color" : "#173177"}
        }
    }
    )
    conn.request("POST", "/cgi-bin/message/template/send?access_token="+access_token, json.JSONEncoder().encode(params), headers)#推送消息请求
    response = conn.getresponse()
    data = response.read()#推送返回数据
    if response.status == 200:
        print 'success'
        print data
    else:
        print 'fail'
    conn.close()