python 定时器使用

# # 创建定时器线程
self.timer_interval = 1
self.publish_message_timer = threading.Timer(interval=self.timer_interval, function=self.publish_message)

#发布监测消息
    def publish_message(self):
        print(self.publist_monitor_topic)
        info = [
             {
                    "id": "mos_num",
                    "value": "30",
                    "remark": ""
                },
                {
                    "id": "mos_switch",
                    "value": "2",
                    "remark": ""
                    },

                {
                    "id": "mos_temp",
                    "value": "3",
                    "remark": ""
                }]

        msg = json.dumps(info)
        result = self.client.publish(self.publist_monitor_topic, msg)
        status = result[0]
        if status == 0:
            print(f"Send `{msg}` to topic `{self.publist_monitor_topic}`")
        else:
            print(f"Failed to send message to topic {self.publist_monitor_topic}")
        self.publish_message_timer = threading.Timer(interval=self.timer_interval, function=self.publish_message)  # 每1秒钟启动一次run函数.不是下面的t启动的
        self.publish_message_timer.start()

if self.publish_message_timer.is_alive():
    self.publish_message_timer.cancel()
    print("定时器处于启动状态，终止定时器")
    self.publish_message_timer = threading.Timer(interval=self.timer_interval,
                                                 function=self.publish_message)
print("启动定时器")
self.publish_message_timer.start()