def get_wx_token():
  url = "https://api.weixin.qq.com/cgi-bin/token"
  try:
    respone = requests.get(url, params=payload, timeout=50)
    access_token = respone.json().get("access_token")
    res = respone.json()
    res["time"] = stamp
    print(u'token过期，重新写入文件的内容>', res)
    with open(token_file, "w+") as f:
      f.write(json.dumps(res))
    return access_token
  except Exception as e:
    msg = traceback.format_exc()
    print('get token error', msg)
    return

def get_access_token():

try:
  with open(token_file, "r") as f:
    content = f.read()
    data_dict = content
    # 如果缓存内容为空，直接重新获取token
    if (content == ''):
      print("token文件为空，重新获取并写入文件")
      result = get_wx_token()
      return result
    else:
      data_dict = re.sub('\'', '\"', data_dict)
      token_time = int(json.loads(data_dict)['time'])
      if (stamp - token_time) > 7100:
        # print("token过期，重新获取并写入文件")
        get_wx_token()
      else:
        return json.loads(data_dict)['access_token']
except Exception as e:
  msg = traceback.format_exc()
  print("access token express time", msg)

def get_templates_list(access_token):
  url = "https://api.weixin.qq.com/cgi-bin/wxopen/template/list".format(access_token)
  data = {
   "offset": 0,
   "count": 20
  }
  r = requests.post(url,data=json.dumps(data)).json()
  tpl_list = r.get('list')
  for tpl in tpl_list:
    print(tpl)
  # print(r.get('list'))

{
 "errcode": 0,
 "errmsg": "ok",
 "list": [
  {
   "template_id": "wDYzYZVxobJivW9oMpSCpuvACOfJXQIoKUm0PY397Tc",
   "title": "购买成功通知",
   "content": "购买地点{{keyword1.DATA}}\n购买时间{{keyword2.DATA}}\n物品名称{{keyword3.DATA}}\n",
   "example": "购买地点：TIT造舰厂\n购买时间：2016年6月6日\n物品名称：咖啡\n"
  }
 ]
}