10000 [3.12] gh-101100: Make __subclasses__ doctest stable (GH-124577) by JelleZijlstra · Pull Request #124580 · python/cpython · GitHub
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[3.12] gh-101100: Make __subclasses__ doctest stable (GH-124577) #124580

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Sep 26, 2024
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[3.12] gh-101100: Make __subclasses__ doctest stable (GH-124577) #124580

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[3.12] gh-101100: Make __subclasses__ doctest stable (GH-124577) 
Using a standard library class makes this test difficult to maintain
as other tests and other parts of the stdlib may create subclasses,
which may still be alive when this test runs depending on GC timing.
(cherry picked from commit 08a467b)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
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JelleZijlstra committed Sep 26, 2024
commit afc77b2958f6323e1f5dea6932eafdd3baf87e8b
6 changes: 4 additions & 2 deletions Doc/reference/datamodel.rst
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Expand Up @@ -1048,8 +1048,10 @@ have the following two methods available:

.. doctest::

>>> int.__subclasses__()
[<class 'bool'>, <enum 'IntEnum'>, <flag 'IntFlag'>, <class 're._constants._NamedIntConstant'>]
>>> class A: pass
>>> class B(A): pass
>>> A.__subclasses__()
[<class 'B'>]

Class instances
---------------
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