def list_devices(self, shop_id=None, page_index=<NUM_LIT:1>, page_size=<NUM_LIT:20>):
data = optionaldict(<EOL>shop_id=shop_id,<EOL>pageindex=page_index,<EOL>pagesize=page_size<EOL>)<EOL>res = self._post(<EOL>'<STR_LIT>',<EOL>data=data,<EOL>result_processor=lambda x: x['<STR_LIT:data>']<EOL>)<EOL>return res<EOL>
查询设备

详情请参考
http://mp.weixin.qq.com/wiki/10/6232005bdc497f7cf8e19d4e843c70d2.html

:param shop_id: 可选，门店 ID
:param page_index: 可选，分页下标，默认从1开始
:param page_size: 可选，每页的个数，默认20个，最大20个
:return: 返回的 JSON 数据包