TimeLimit middleware error on Python 3.13

[anze3db]

Issues

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Checklist

• Does your title concisely summarize the problem?
• Did you include a minimal, reproducible example?
• What OS are you using?
• What version of Dramatiq are you using?
• What did you do?
• What did you expect would happen?
• What happened?

What OS are you using?

I've tested it on MacOS 15 and Debian 12

What version of Dramatiq are you using?

1.17.0

What did you do?

Upgraded to Python 3.13 and ran my Dramatiq worker configured with https://github.com/Bogdanp/django_dramatiq.

What did you expect would happen?

I expect no errors to be raised when the "dramatiq.middleware.TimeLimit", is enabled.

What happened?

The following error is raised:

TypeError: '_thread._ThreadHandle' object is not callable
[2024-10-08 12:48:06,729] [PID 31240] [Thread-1] [dramatiq.middleware.time_limit.TimeLimit] [ERROR] Unhandled error while running the time limit handler.
Traceback (most recent call last):
  File "/Users/anzepecar/code/fedidevs/.venv/lib/python3.13/site-packages/dramatiq/middleware/time_limit.py", line 113, in run
    self._handle()
    ~~~~~~~~~~~~^^

I assume that Python 3.13 changed the _thred._ThreadHandle signature.

[amureki]

Hey @anze3db !
I stumbled upon the very same issue and took a moment to try figuring out what is happening here.
Thanks for the hint about signature changes!

I created a small patch with a possible fix, I will do more tests, but from the first look it seems to resolve the problem.

[anze3db]

@amureki great find, your PR makes sense. I hope it gets merged soon, thanks!