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| author |   Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2022-11-27 10:05:59 -0800 |
|---|---|---|
| committer |   GitHub <noreply@github.com> | 2022-11-27 10:05:59 -0800 |
| commit | 366adc7c832554454841fe7472c90f3ed9bf1f7d (patch) | |
| tree | 309329d5a2b4ebebab531a25c6467bacc43d4d09 | |
| parent | GH-87235: Make sure "python /dev/fd/9 9</path/to/script.py" works on macOS (G... (diff) | |
| download | cpython-366adc7c832554454841fe7472c90f3ed9bf1f7d.tar.gz cpython-366adc7c832554454841fe7472c90f3ed9bf1f7d.tar.bz2 cpython-366adc7c832554454841fe7472c90f3ed9bf1f7d.zip | |
gh-91340: Document multiprocessing.set_start_method force parameter (GH-32339)
GH-91340
https://bugs.python.org/issue47184
(cherry picked from commit dfc2732a57e3ea6603d62f769d4f9c80be726fa4)
Co-authored-by: Sam Ezeh <sam.z.ezeh@gmail.com>
Automerge-Triggered-By: GH:kumaraditya303
| -rw-r--r-- | Doc/library/multiprocessing.rst | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst index 5516084780..b5ceeb796f 100644 --- a/Doc/library/multiprocessing.rst +++ b/Doc/library/multiprocessing.rst @@ -1089,10 +1089,14 @@ Miscellaneous .. versionchanged:: 3.11 Accepts a :term:`path-like object`. -.. function:: set_start_method(method) +.. function:: set_start_method(method, force=False) Set the method which should be used to start child processes. - *method* can be ``'fork'``, ``'spawn'`` or ``'forkserver'``. + The *method* argument can be ``'fork'``, ``'spawn'`` or ``'forkserver'``. + Raises :exc:`RuntimeError` if the start method has already been set and *force* + is not ``True``. If *method* is ``None`` and *force* is ``True`` then the start + method is set to ``None``. If *method* is ``None`` and *force* is ``False`` + then the context is set to the default context. Note that this should be called at most once, and it should be protected inside the ``if __name__ == '__main__'`` clause of the |