[issue42850] Process hangs when calling urllib.request in a multiprocessing.Process with import of sounddevice package

Robin Scheibler added the comment: Thank you very much for your help! -- ___ Python tracker ___ ___ Python-bugs-list mailing list U

[issue42850] Process hangs when calling urllib.request in a multiprocessing.Process with import of sounddevice package

Guido van Rossum added the comment: No, let's leave 3.7 alone -- it's in security-fixes-only mode. -- resolution: -> fixed stage: -> resolved status: open -> closed ___ Python tracker _

[issue42850] Process hangs when calling urllib.request in a multiprocessing.Process with import of sounddevice package

Robin Scheibler added the comment: Thanks for the suggestion. I had indeed run into some issues with fork vs spawn before. I have tested with 3.8.5 and 3.9.1 and the bug doesn't occur with these more recent versions. Should I leave the bug open since 3.7 is still supported ? -- __

[issue42850] Process hangs when calling urllib.request in a multiprocessing.Process with import of sounddevice package

Ned Deily added the comment: Also note that there are known problems with using the "fork" start method of multiprocessing on macOS. As of Python 3.8, the default start methord on macOS is now "spawn": https://docs.python.org/3.9/library/multiprocessing.html#contexts-and-start-methods Try u

[issue42850] Process hangs when calling urllib.request in a multiprocessing.Process with import of sounddevice package

Robin Scheibler added the comment: Thank you very much for the reply! I was indeed hesitating where to post the issue. I have now cross-posted in the sounddevice issue tracker. https://github.com/spatialaudio/python-sounddevice/issues/302 I'll update the issue if things progress on that side

[issue42850] Process hangs when calling urllib.request in a multiprocessing.Process with import of sounddevice package

Guido van Rossum added the comment: I would assume it’s some interaction between threads and fork. Have you asked the authors of sound device about this? -- nosy: +gvanrossum ___ Python tracker _

[issue42850] Process hangs when calling urllib.request in a multiprocessing.Process with import of sounddevice package

New submission from Robin Scheibler : I am having an issue with using urllib in a multiprocessing.Process when the package sounddevice (https://github.com/spatialaudio/python-sounddevice) has been already imported. The sub-process hangs upon calling urllib.request.urlopen (and methods from th