2021-09-02 19:37:05 +08:00

19 lines
327 B
Python

import sys_bus
def sub_cb(topic, msg):
"""
订阅函数
:param topic: 订阅的topic
:param msg: 来自topic的消息
:return:
"""
print("sub_cb === {}".format(topic, msg))
# 订阅topic
sys_bus.subscribe("test", sub_cb)
# 发布消息到topic中
sys_bus.publish("test", "this is one sys_bus")