Question

我使用多个MQTT客户端作为线程，一些作为订阅者而另一些作为发布者。发布者线程工作正常，但订阅者线程不是。

def subscribe_topic(self, clientID, topic):
    self.initiate_connection_to_broker(clientID)
    try:            
        self.mqtt_client.subscribe(topic, qos = 0)
        self.mqtt_client.loop_forever()         
    except KeyboardInterrupt:
        print("Disconnecting...!!!!")
    finally:
        self.disconnect_from_broker()

现在因为＆＃34; loop_forever（）＆＃34;，它必须永远运行。我的问题是当我试图通过＆＃34; KeyboardInterrupt（ctrl + c）＆＃34;而不是运行＆＃34;而不是最后阻止＆＃34;来阻止用户线程。我到了下面：

^CException ignored in: <module 'threading' from '/usr/lib/python3.5/threading.py'>
Traceback (most recent call last):
  File "/usr/lib/python3.5/threading.py", line 1288, in _shutdown
    t.join()
  File "/usr/lib/python3.5/threading.py", line 1054, in join
    self._wait_for_tstate_lock()
  File "/usr/lib/python3.5/threading.py", line 1070, in _wait_for_tstate_lock
    elif lock.acquire(block, timeout):
KeyboardInterrupt

然后退出。我打电话给＃34; subscribe_topic＆＃34;来自＆＃34; run＆＃34;继承threading.Thread类的方法。方法＆＃34; subscribe_topic＆＃34;在另一个类中定义。我想执行＆＃34;除了最后阻止＆＃34;键盘中断后。谁能告诉我解决方案或我需要做出哪些更正？

在KeyboardInterrupt之后，最后块没有执行。

0 个答案: