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gh-120743: Soft deprecate os.popen() function (#120744) 

Soft deprecate os.popen() and os.spawn*() functions.
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Victor Stinner 2024-07-01 18:27:50 +02:00 committed by GitHub
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3 changed files with 17 additions and 1 deletions
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10
Doc/library/os.rst
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@ -4642,6 +4642,10 @@ written in Python, such as a mail server's external command delivery program.
Use :class:`subprocess.Popen` or :func:`subprocess.run` to
control options like encodings.
.. deprecated:: 3.14
The function is :term:`soft deprecated` and should no longer be used to
write new code. The :mod:`subprocess` module is recommended instead.
.. function:: posix_spawn(path, argv, env, *, file_actions=None, \
setpgroup=None, resetids=False, setsid=False, setsigmask=(), \
@ -4868,6 +4872,10 @@ written in Python, such as a mail server's external command delivery program.
.. versionchanged:: 3.6
Accepts a :term:`path-like object`.
.. deprecated:: 3.14
These functions are :term:`soft deprecated` and should no longer be used
to write new code. The :mod:`subprocess` module is recommended instead.
.. data:: P_NOWAIT
P_NOWAITO
@ -4972,7 +4980,7 @@ written in Python, such as a mail server's external command delivery program.
shell documentation.
The :mod:`subprocess` module provides more powerful facilities for spawning
new processes and retrieving their results; using that module is preferable
new processes and retrieving their results; using that module is recommended
to using this function. See the :ref:`subprocess-replacements` section in
the :mod:`subprocess` documentation for some helpful recipes.

5
Doc/whatsnew/3.14.rst
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@ -144,6 +144,11 @@ Deprecated
as a single positional argument.
(Contributed by Serhiy Storchaka in :gh:`109218`.)
* :term:`Soft deprecate <soft deprecated>` :func:`os.popen` and
:func:`os.spawn* <os.spawnl>` functions. They should no longer be used to
write new code. The :mod:`subprocess` module is recommended instead.
(Contributed by Victor Stinner in :gh:`120743`.)
Removed
=======

3
Misc/NEWS.d/next/Library/2024-06-19-15-43-04.gh-issue-120743.CMMl2P.rst Normal file
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@ -0,0 +1,3 @@
:term:`Soft deprecate <soft deprecated>` :func:`os.popen` and :func:`os.spawn*
<os.spawnl>` functions. They should no longer be used to write new code. The
:mod:`subprocess` module is recommended instead. Patch by Victor Stinner.