MQTT paho client graceful shutdown?

[marleyjaffe]

I have written a script and while developing/testing I am frequently stopping and rerunning the script. Occasionally I am getting the following error when restarting the script. If I wait and give it a few more seconds, the error goes away and my script starts. Is there something I can do when quitting the script to gracefully close out the paho mqtt session to prevent this error from happening? I need this script to spin up correctly since it'll be operating in autonomous mode.

Thanks for the help and the great MQTT Library!
Error below:

gatepi@gatepi:~/AccessControl $ python logic.py
State: closed
Exception in thread Thread-1 (_thread_main):
Traceback (most recent call last):
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
    self.run()
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/threading.py", line 953, in run
    self._target(*self._args, **self._kwargs)
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 3591, in _thread_main
    self.loop_forever(retry_first_connection=True)
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 1756, in loop_forever
    rc = self._loop(timeout)
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 1164, in _loop
    rc = self.loop_read()
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 1556, in loop_read
    rc = self._packet_read()
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 2439, in _packet_read
    rc = self._packet_handle()
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 3033, in _packet_handle
    return self._handle_publish()
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 3327, in _handle_publish
    self._handle_on_message(message)
  File "/home/gatepi/.pyenv/versions/3.10.13/lib/python3.10/site-packages/paho/mqtt/client.py", line 3570, in _handle_on_message
    on_message(self, self._userdata, message)
  File "/home/gatepi/AccessControl/logic.py", line 276, in gate_callback
    gate.stop()
TypeError: gate.stop() missing 1 required positional argument: 'self'

[0x3333]

Looks like the problem is in your code, more specific home/gatepi/AccessControl/logic.py.