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bpo-33725: multiprocessing uses spawn by default on macOS #13603

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vstinner merged 1 commit into from
May 28, 2019
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bpo-33725: multiprocessing uses spawn by default on macOS #13603

vstinner merged 1 commit into from
May 28, 2019

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@vstinner vstinner commented May 27, 2019 •
edited by bedevere-bot
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The multiprocessing module now uses the "spawn" start method by
default on macOS.

https://bugs.python.org/issue33725

@vstinner vstinner requested a review from 1st1 as a code owner May 27, 2019 23:26
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vstinner commented May 27, 2019

cc @warsaw @applio @pitrou

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vstinner commented May 27, 2019

I didn't test my PR. I'm not a multiprocessing expert at all, so I'm not sure that it even does what it is supposed to do :-D

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vstinner commented May 28, 2019

I tested my PR on macOS: it seems like it works as expected :-)

macbook:master haypo$ ./python.exe
Python 3.8.0a4+ (heads/pr/13603:d117d0f, May 28 2019, 14:37:04) 
[Clang 10.0.0 (clang-1000.10.44.4)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import multiprocessing; multiprocessing.get_context()
<multiprocessing.context.SpawnContext object at 0x1009c9550>

@vstinner
bpo-33725: multiprocessing uses spawn by default on macOS
bc36696 
On macOS, the multiprocessing module now uses the "spawn" start
method by default.
@vstinner vstinner merged commit 17a5588 into python:master May 28, 2019
@vstinner vstinner deleted the mp_macos branch May 28, 2019 14:02
@sivel sivel mentioned this pull request Oct 16, 2019
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@mbargull mbargull mentioned this pull request Dec 6, 2019
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DinoV pushed a commit to DinoV/cpython that referenced this pull request Jan 14, 2020
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bpo-33725: multiprocessing uses spawn by default on macOS (pythonGH-1…
c5b8a89 
…3603)

On macOS, the multiprocessing module now uses the "spawn" start
method by default.
@alalek alalek mentioned this pull request Mar 5, 2020
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@taldcroft taldcroft mentioned this pull request Jul 14, 2020
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@thefloweringash thefloweringash mentioned this pull request Jan 20, 2022
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@ASLE90 ASLE90 mentioned this pull request Jan 26, 2025
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