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gh-80334: fix multiprocessing.freeze_support for other spawn platforms #134462

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Merged
merged 5 commits into from
May 24, 2025
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gh-80334: fix multiprocessing.freeze_support for other spawn platforms #134462

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gh-80334: Doc/library/multiprocessing.rst: freeze_support: Change to …
eddymul May 21, 2025
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Merge branch 'main' into main
eddymul May 21, 2025
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Doc/library/multiprocessing.rst: freeze_support: Change to wrap at 80…
eddymul May 22, 2025
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gh-80334: Have multiprocessing.freeze_support() enable on spawn, not …
gpshead May 24, 2025
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gpshead May 24, 2025
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7 changes: 3 additions & 4 deletions Doc/library/multiprocessing.rst
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Expand Up @@ -1081,7 +1081,7 @@ Miscellaneous
.. function:: freeze_support()

Add support for when a program which uses :mod:`multiprocessing` has been
frozen to produce a Windows executable. (Has been tested with **py2exe**,
frozen to produce an executable. (Has been tested with **py2exe**,
**PyInstaller** and **cx_Freeze**.)

One needs to call this function straight after the ``if __name__ ==
Expand All @@ -1099,9 +1099,8 @@ Miscellaneous
If the ``freeze_support()`` line is omitted then trying to run the frozen
executable will raise :exc:`RuntimeError`.

Calling ``freeze_support()`` has no effect when invoked on any operating
system other than Windows. In addition, if the module is being run
normally by the Python interpreter on Windows (the program has not been
Calling ``freeze_support()`` has no effect when the start method is not *spawn*. In addition, if the module is being run
normally by the Python interpreter (the program has not been
frozen), then ``freeze_support()`` has no effect.

.. function:: get_all_start_methods()
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