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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 on_queue_declareok(self, method_frame):
 """ Invoked by pika when the Queue.Declare RPC call made in setup_queue has completed. In this method we will bind the queue and exchange together with the routing key by issuing the Queue.Bind RPC command. When this command is complete, the on_bindok method will be invoked by pika. :param pika.frame.Method method_frame: The Queue.DeclareOk frame """

        self._logger.debug('Binding %s to %s with %s',
                           self._exchange, self._queue, self._routing_key)
        self._channel.queue_bind(self.on_bindok, self._queue,
                                 self._exchange, self._routing_key)
        self._channel.basic_qos(prefetch_count=1)