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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 queue_delete(self, queue='', if_unused=False, if_empty=False, nowait=False):
 """Delete a queue This method deletes a queue. When a queue is deleted any pending messages are sent to a dead-letter queue if this is defined in the server configuration, and all consumers on the queue are cancelled. RULE: The server SHOULD use a dead-letter queue to hold messages that were pending on a deleted queue, and MAY provide facilities for a system administrator to move these messages back to an active queue. PARAMETERS: queue: shortstr Specifies the name of the queue to delete. If the queue name is empty, refers to the current queue for the channel, which is the last declared queue. RULE: If the client did not previously declare a queue, and the queue name in this method is empty, the server MUST raise a connection exception with reply code 530 (not allowed). RULE: The queue must exist. Attempting to delete a non- existing queue causes a channel exception. if_unused: boolean delete only if unused If set, the server will only delete the queue if it has no consumers. If the queue has consumers the server does does not delete it but raises a channel exception instead. RULE: The server MUST respect the if-unused flag when deleting a queue. if_empty: boolean delete only if empty If set, the server will only delete the queue if it has no messages. If the queue is not empty the server raises a channel exception. nowait: boolean do not send a reply method If set, the server will not respond to the method. The client should not wait for a reply method. If the server could not complete the method it will raise a channel or connection exception. """

        args = AMQPWriter()
        args.write_short(0)
        args.write_shortstr(queue)
        args.write_bit(if_unused)
        args.write_bit(if_empty)
        args.write_bit(nowait)
        self._send_method((50, 40), args)

        if not nowait:
            return self.wait(allowed_methods=[
                (50, 41),  # Channel.queue_delete_ok
            ])