code: def get_queue(self, queue_redis_key):
          
          try:
              queue_pk = int(queue_redis_key.split(':')[-2])
          except:
              raise DoesNotExist('Unable to get the queue from the key %s' % queue_redis_key)
          return self.queue_model.get(queue_pk)
docs: Return a queue based on the key used in redis to store the list