Exception KeyError: KeyError(139697538152192,) on using threading module with atexit handler

Question

I am trying to add a atexit handler to my code. But I find that if I have imported threading module, it gives me an KeyError exception. Is this a bug in python threading module?

#!/usr/bin/python2.7

import threading

# Register a signal handler to exit gracefully
def exit_gracefully():
    print 'Exiting ...'
    import sys
    sys.exit(1)

import atexit
atexit.register(exit_gracefully)

On running the above script, I get

Exiting ...
Exception KeyError: KeyError(139697538152192,) in <module 'threading' from '/usr/lib/python2.7/threading.pyc'> ignored

You are not using threading module. Have you tried removing it? Does the error stay? — Syed Mauze Rehan
– Syed Mauze Rehan, Commented Mar 23, 2015 at 15:04
Also, can you try the same code piece in python shell >>> just the import threading. Does it give the same error? — Syed Mauze Rehan
– Syed Mauze Rehan, Commented Mar 23, 2015 at 15:11
Ofcourse I know I am not using threading module. But in need to use threading module, and thats causing trouble. This script is just a stripped down version of the actual script that shows the problem — Prem Anand
– Prem Anand, Commented Mar 23, 2015 at 16:17
The issue is seen on interactive shell too on exiting it by pressing Ctrl+D — Prem Anand
– Prem Anand, Commented Mar 23, 2015 at 16:17
Couldn't find anybody else on the internet with the same problem as me. I was running into the same issue! I think there is a bug with the atexit module. I'm not importing threading in my code and still getting the same key error above. — ihatecache
– ihatecache, Commented Jun 16, 2015 at 20:06

Prem Anand · Accepted Answer · 2015-06-16 22:28:40Z

1

In my case, I get this issue only when threading module was loaded. I managed to solve it by not invoking sys.exit within exit handler.

#!/usr/bin/python2.7

import threading

# Register a signal handler to exit gracefully
def exit_gracefully():
    print 'Exiting ...'

import atexit
atexit.register(exit_gracefully)

answered Jun 16, 2015 at 22:28

Prem Anand

2,57719 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Exception KeyError: KeyError(139697538152192,) on using threading module with atexit handler

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related