code: def get_queue(self, queue_name):
          
          rs = self.get_all_queues(queue_name)
          for q in rs:
              if q.url.endswith(queue_name):
                  return q
          return None
docs: Retrieves the queue with the given name, or ``None`` if no match
          was found.
  
          :param str queue_name: The name of the queue to retrieve.
          :rtype: :py:class:`boto.sqs.queue.Queue` or ``None``
          :returns: The requested queue, or ``None`` if no match was found.