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gh-109070: Document that get_context in multiprocessing have side effect (#136341)

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Document that get_context in multiprocessing have side effect
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AN Long 2025-07-07 03:26:26 +09:00 • committed by GitHub
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Doc/library/multiprocessing.rst
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@ -1118,7 +1118,9 @@ Miscellaneous
Return a context object which has the same attributes as the Return a context object which has the same attributes as the
:mod:`multiprocessing` module. :mod:`multiprocessing` module.
If *method* is ``None`` then the default context is returned. If *method* is ``None`` then the default context is returned. Note that if
the global start method has not been set, this will set it to the
default method.
Otherwise *method* should be ``'fork'``, ``'spawn'``, Otherwise *method* should be ``'fork'``, ``'spawn'``,
``'forkserver'``. :exc:`ValueError` is raised if the specified ``'forkserver'``. :exc:`ValueError` is raised if the specified
start method is not available. See :ref:`multiprocessing-start-methods`. start method is not available. See :ref:`multiprocessing-start-methods`.
@ -1129,10 +1131,10 @@ Miscellaneous
Return the name of start method used for starting processes. Return the name of start method used for starting processes.
If the start method has not been fixed and *allow_none* is false, If the global start method has not been set and *allow_none* is
then the start method is fixed to the default and the name is ``False``, then the start method is set to the default and the name
returned. If the start method has not been fixed and *allow_none* is returned. If the start method has not been set and *allow_none* is
is true then ``None`` is returned. ``True`` then ``None`` is returned.
The return value can be ``'fork'``, ``'spawn'``, ``'forkserver'`` The return value can be ``'fork'``, ``'spawn'``, ``'forkserver'``
or ``None``. See :ref:`multiprocessing-start-methods`. or ``None``. See :ref:`multiprocessing-start-methods`.