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GeezerVison is showing github.com — Document `NewType.__supertype__` · Issue #104874 · python/cpython

Document NewType.__supertype__ #104874

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#104875
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Document NewType.__supertype__#104874
#104875
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docsDocumentation in the Doc dirDocumentation in the Doc dirtopic-typing

Description

@JelleZijlstra
JelleZijlstra
opened on May 24, 2023
Issue body actions

typing.NewType has always had an attribute __supertype__ pointing to its supertype. It is widely used in the wild (e.g. https://github.com/pydantic/pydantic/blob/00158878cb1c6218cd58ee62248db56c65e4172c/pydantic/_internal/_typing_extra.py#L153, https://github.com/quora/pyanalyze/blob/bd7f520adc2d8b098be657dfa514d1433bea3b0c/pyanalyze/annotations.py#L456), but not documented. Let's document it and commit to leaving it stable.

Linked PRs

  • gh-104874: Document NewType.__supertype__ #104875
  • [3.12] gh-104874: Document NewType.__supertype__ (GH-104875) #104906
  • [3.11] gh-104874: Document NewType.__supertype__ (GH-104875) #104907
Reacted by Alex Waygood

Activity

  1. JelleZijlstra
    added
    docsDocumentation in the Doc dirDocumentation in the Doc dir
    topic-typing
    on May 24, 2023
  2. AlexWaygood
    closed this as completedin #104875on May 24, 2023
  3. AlexWaygood
    added a commit that references this issue on May 24, 2023

    gh-104874: Document NewType.__supertype__ (#104875)

    41768a2
  4. miss-islington
    added 2 commits that reference this issue on May 24, 2023

    pythongh-104874: Document NewType.__supertype__ (pythonGH-104875)

    b29fc4b

    pythongh-104874: Document NewType.__supertype__ (pythonGH-104875)

    fa00882
  5. AlexWaygood
    added 2 commits that reference this issue on May 24, 2023

    [3.12] gh-104874: Document NewType.__supertype__ (GH-104875) (#104906)

    a064233

    [3.11] gh-104874: Document NewType.__supertype__ (GH-104875) (#104907)

    3b3f2e1
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