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gh-91340: Document multiprocessing.set_start_method force parameter (GH-32339)

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#91340


https://bugs.python.org/issue47184

Automerge-Triggered-By: GH:kumaraditya303
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Sam Ezeh 2022-11-27 17:58:39 +00:00 • committed by GitHub
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Doc/library/multiprocessing.rst
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@ -1089,10 +1089,14 @@ Miscellaneous
.. versionchanged:: 3.11 .. versionchanged:: 3.11
Accepts a :term:`path-like object`. 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. 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 Note that this should be called at most once, and it should be
protected inside the ``if __name__ == '__main__'`` clause of the protected inside the ``if __name__ == '__main__'`` clause of the