1 o 2 3 ��h� � @ s0 d Z ddlmZ ddlmZ G dd� de�ZdS )zHPayload system for IPython. 4 5 Authors: 6 7 * Fernando Perez 8 * Brian Granger 9 � )�Configurable)�Listc @ s8 e Zd ZU eg �Zeed<