<button open-type="getPhoneNumber" bindgetphonenumber="getPhoneNumber"> </button>

 # 获取openid，session_key
 # Appid为小程序id
  openid_url = "https://api.weixin.qq.com/sns/jscode2session" % (
    APP_ID, APP_KEY, code
  )
  req = requests.get(openid_url)
  rep = req.json()
  session_key = rep.get("session_key")

 import base64
 import json
 from Crypto.Cipher import AES
 class WXBizDataCrypt:
   def __init__(self, appId, sessionKey):
     self.appId = appId
     self.sessionKey = sessionKey
   def decrypt(self, encryptedData, iv):
     # base64 decode
     sessionKey = base64.b64decode(self.sessionKey)
     encryptedData = base64.b64decode(encryptedData)
     iv = base64.b64decode(iv)
     cipher = AES.new(sessionKey, AES.MODE_CBC, iv)
     decrypted = json.loads(self._unpad(cipher.decrypt(encryptedData)))
     if decrypted['watermark']['appid'] != self.appId:
       raise Exception('Invalid Buffer')
     return decrypted
   def _unpad(self, s):
     return s[:-ord(s[len(s)-1:])]

# APP_ID为小程序id不是openid！！！
pc = wx_jm(APP_ID, session_key)
res = pc.decrypt(encryptedData, iv)

{
  "phoneNumber": "13580006666", 
  "purePhoneNumber": "13580006666", 
  "countryCode": "86",
  "watermark":
  {
    "appid":"APPID",
    "timestamp":TIMESTAMP
  }
}