code: def json_response(self, data, code=200, indent=2, headers={}):
          
          headers = headers.copy()
          headers['Content-Type'] = 'application/json'
          payload = json.dumps(data, indent=indent, default=self.json_handle_weird)
          return Response(payload, status=code, headers=headers)
docs: Useful for restful APIs
          :param data: a native python object, must be json serialiable, otherwise will be handled by :py:meth:`Application.json_handle_weird`
          :param code: the http status code
          :param indent: how many characters to indent when generating the json
          :param headers: a dict with optional headers
          :returns: a :py:class:`flask.Response` with the option of prettifying
          the json response