python搭建微信公众平台

python基于新浪sae开发的微信公众平台，实现功能：

输入段子---回复笑话
输入开源+文章---发送消息到开源中国
输入快递+订单号---查询快递信息
输入天气---查询南京最近五天天气状况
输入微博热点---回复微博当前热门话题
输入电影+名称---回复百度云盘中搜索的链接

具体实现代码：

# -*- coding: utf-8 -*-
import hashlib
import web
import lxml
import time
import os
import urllib2,json
import urllib
import re
import random
import hashlib
import cookielib
from urllib import urlencode
from lxml import etree
 
class WeixinInterface:
 
  def __init__(self):
    self.app_root = os.path.dirname(__file__)
    self.templates_root = os.path.join(self.app_root, 'templates')
    self.render = web.template.render(self.templates_root)
     
 
  def GET(self):
    #获取输入参数
    data = web.input()
    signature=data.signature
    timestamp=data.timestamp
    nonce=data.nonce
    echostr=data.echostr
    #自己的token
    token="weixin9047" #这里改写你在微信公众平台里输入的token
    #字典序排序
    list=[token,timestamp,nonce]
    list.sort()
    sha1=hashlib.sha1()
    map(sha1.update,list)
    hashcode=sha1.hexdigest()
    #sha1加密算法    
    #如果是来自微信的请求，则回复echostr
    if hashcode == signature:
      return echostr
     
 
     
  def POST(self):    
    str_xml = web.data() #获得post来的数据
    xml = etree.fromstring(str_xml)#进行XML解析
    content=xml.find("Content").text#获得用户所输入的内容
    msgType=xml.find("MsgType").text
    fromUser=xml.find("FromUserName").text
    toUser=xml.find("ToUserName").text
    if(content == u"天气"):
      url = "http://m.ip138.com/21/nanjing/tianqi/"
      headers = {
        'Connection': 'Keep-Alive',
        'Accept': 'text/html, application/xhtml+xml, **',
        'Accept-Language': 'en-US,en;q=0.8,zh-Hans-CN;q=0.5,zh-Hans;q=0.3',
        'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko'}
      req = urllib2.Request(url, headers = headers)
      opener = urllib2.urlopen(req)
      html = opener.read()
      rex = r'https?://pan.baidu.com.*?uk=[0-9]{10}.*[d+?]"'
      m = re.findall(rex,html)     
      string = u""
      for i in m:
        string = string + i + "n"
      return self.render.reply_text(fromUser,toUser,int(time.time()),u"以下是电影链接：n"+string)
    elif(u"段子" in content):
      url_8 = "http://www.qiushibaike.com/"
      url_24 = "http://www.qiushibaike.com/hot/"
      headers = {
        'Connection': 'Keep-Alive',
        'Accept': 'text/html, application/xhtml+xml, **',
            'Accept-Language': 'en-US,en;q=0.8,zh-Hans-CN;q=0.5,zh-Hans;q=0.3',
            'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko'}
      req = urllib2.Request(url, headers = headers)
      opener = urllib2.urlopen(req)
      html = opener.read().decode("utf-8")
      rex = r'(?<=div class="c"><a href=").{60,79}(?=</a>)'
      ss = re.findall(rex,html)
      string = u""
      for i in ss:
        string = string + i.replace('>','n')+"n"
      return self.render.reply_text(fromUser,toUser,int(time.time()),string.replace('"',''))
    elif(content == u"知乎信息"):
      username = '18362983803'
      password = ''
      _xsrf='558c1b60725377c5810ae2484b26781e'
      url = r'https://www.zhihu.com/login/phone_num'
      cj = cookielib.CookieJar()
      opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
      opener.addheaders = [('User-agent','Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.3.0')]
      data = urllib.urlencode({"phone_num":username,"password":password,'_xsrf':_xsrf})
      opener.open(url,data)
      html = opener.open('https://www.zhihu.com/noti7/new?r=1454793308655').read()
      jo = json.loads(html)
      data = jo[1]
      string = "增长了："+str(data[0])+"个评论"+str(data[1])+"个粉丝"+str(data[2])+"个赞同"
      return self.render.reply_text(fromUser,toUser,int(time.time()),string)
    elif(u"钟志远" in content):
      return self.render.reply_text(fromUser,toUser,int(time.time()),u"你想找全世界最帅的人干嘛？如果你是妹子，请加微信18362983803！汉子绕道！")
    elif(u"使用" in content):
      return self.render.reply_text(fromUser,toUser,int(time.time()),u"搜电影:电影+电影名,最近天气：天气，微博热门：微博热点，快递查询：快递+单号，看笑话：段子，发送动弹到开源中国：开源+内容")
    else:
      url = r'http://www.xiaohuangji.com/ajax.php'
      cj = cookielib.CookieJar()
      opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
      opener.addheaders = [('User-agent','Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Firefox/38.0 Iceweasel/38.3.0')]
      string = urllib.quote(content.encode("utf-8"))
      try:
        data = urllib.urlencode({"para":string})
        html = opener.open(url,data).read() 
        string = html+"n----[回复[使用]]"
        return self.render.reply_text(fromUser,toUser,int(time.time()),string)
      except Exception,ex:
        return self.render.reply_text(fromUser,toUser,int(time.time()),u"我不想理你了～") 

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