[New-bugs-announce] [issue12954] Multiprocessing logging under Windows

[paul j3]

New submission from paul j3 <ajipanca at gmail.com>:

The Windows programming guidelines for the multiprocessing module documentation should include a warning that any logging initialization should be protected by the 'if __name__' block.  Otherwise you will get duplicate logging entries for the child processes.  This is because the multiprocessing.forking.prepare() function explicitly calls log_to_stderr(), and may implicitly do so again when it imports the parent module, resulting in duplicate logging handlers.

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assignee: docs at python
components: Documentation
messages: 143815
nosy: docs at python, paul.j3
priority: normal
severity: normal
status: open
title: Multiprocessing logging under Windows

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12954>
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