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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Execute(self, http):
 """Execute all the requests as a single batched HTTP request. Args: http: A httplib2.Http object to be used with the request. Returns: None Raises: BatchError if the response is the wrong format. """


        self._Execute(http)

        for key in self.__request_response_handlers:
            response = self.__request_response_handlers[key].response
            callback = self.__request_response_handlers[key].handler

            exception = None

            if response.status_code >= 300:
                exception = exceptions.HttpError.FromResponse(response)

            if callback is not None:
                callback(response, exception)
            if self.__callback is not None:
                self.__callback(response, exception)