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Document `NewType.supertype` #104874

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docstopic-typing

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on May 24, 2023

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

JelleZijlstra
added
docsDocumentation in the Doc dir

topic-typing
on May 24, 2023
AlexWaygood
closed this as completedin #104875 on May 24, 2023
AlexWaygood
added a commit that references this issue on May 24, 2023
gh-104874: Document NewType.__supertype__ (#104875)
41768a2
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
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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