Zachary Ware <zachary.ware@gmail.com> added the comment: As far as I can tell, this was an application bug in multiprocessing cleanup 7 years ago. I'm not sure there's really even anything to add to the docs for this, but if anyone disagrees or produces a patch, please reopen. ---------- nosy: +davin, pitrou, zach.ware resolution: -> works for me stage: -> resolved status: open -> closed _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue13081> _______________________________________