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[3.13] gh-84559: improve What's New entry for multiprocessing startmethod changes (GH-128173) #137156

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[3.13] gh-84559: improve What's New entry for multiprocessing startmethod changes (GH-128173) #137156

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[3.13] gh-84559: improve What's New entry for multiprocessing start… 
… method changes (GH-128173)

(cherry picked from commit b8c313a)

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
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@picnixz @gpshead
@StanFromIreland @brianschubert
3 people authored and brianschubert committed Jul 27, 2025
commit ef1acf383657f2372a8e995b38653d4490ea1ce2
9 changes: 9 additions & 0 deletions Doc/library/multiprocessing.rst
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Expand Up @@ -111,6 +111,8 @@ Contexts and start methods
Depending on the platform, :mod:`multiprocessing` supports three ways
to start a process. These *start methods* are

.. _multiprocessing-start-method-spawn:

*spawn*
The parent process starts a fresh Python interpreter process. The
child process will only inherit those resources necessary to run
Expand All @@ -121,6 +123,8 @@ to start a process. These *start methods* are

Available on POSIX and Windows platforms. The default on Windows and macOS.

.. _multiprocessing-start-method-fork:

*fork*
The parent process uses :func:`os.fork` to fork the Python
interpreter. The child process, when it begins, is effectively
Expand All @@ -141,6 +145,8 @@ to start a process. These *start methods* are
raise a :exc:`DeprecationWarning`. Use a different start method.
See the :func:`os.fork` documentation for further explanation.

.. _multiprocessing-start-method-forkserver:

*forkserver*
When the program starts and selects the *forkserver* start method,
a server process is spawned. From then on, whenever a new process
Expand Down Expand Up @@ -3025,6 +3031,9 @@ Beware of replacing :data:`sys.stdin` with a "file like object"

For more information, see :issue:`5155`, :issue:`5313` and :issue:`5331`

.. _multiprocessing-programming-spawn:
.. _multiprocessing-programming-forkserver:

The *spawn* and *forkserver* start methods
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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