code: def pop(self, queue_name):
          
          task_id = self.conn.lpop(queue_name)
          data = self.conn.get(task_id)
          self.conn.delete(task_id)
          return data
docs: Pops a task off the queue.
  
          :param queue_name: The name of the queue. Usually handled by the
              ``Gator`` instance.
          :type queue_name: string
  
          :returns: The data for the task.
          :rtype: string