text: from weixin import WXAPPAPI
  from weixin.lib.wxcrypt import WXBizDataCrypt
  from django.conf import settings
  
  wx_api = WXAPPAPI(appid=settings.WEIXIN["APP_ID"],
                    app_secret=settings.WEIXIN["APP_SECRET"])
  
  
  def get_session_info(code):
      session_info = wx_api.exchange_code_for_session_key(code=code)
      return session_info
  