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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 receive_one_message(self):
 """Handle a single request. Polls the transport for a new message. After a new message has arrived :py:meth:`_spawn` is called with a handler function and arguments to handle the request. The handler function will try to decode the message using the supplied protocol, if that fails, an error response will be sent. After decoding the message, the dispatcher will be asked to handle the resulting request and the return value (either an error or a result) will be sent back to the client using the transport. """

        context, message = self.transport.receive_message()
        if callable(self.trace):
            self.trace('-->', context, message)

        # assuming protocol is threadsafe and dispatcher is theadsafe, as
        # long as its immutable

        def handle_message(context, message):
            try:
                request = self.protocol.parse_request(message)
            except tinyrpc.exc.RPCError as e:
                response = e.error_respond()
            else:
                response = self.dispatcher.dispatch(request)

            # send reply
            if response is not None:
                result = response.serialize()
                if callable(self.trace):
                    self.trace('<--', context, result)
                self.transport.send_reply(context, result)

        self._spawn(handle_message, context, message)