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bpo-41810: Reintroduce `types.EllipsisType`, `.NoneType` & `.NotImplementedType` by BvB93 · Pull Request #22336 · python/cpython · GitHub
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bpo-41810: Reintroduce types.EllipsisType, .NoneType & .NotImplementedType #22336

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Merged
gvanrossum merged 13 commits into from
Sep 22, 2020
Merged

bpo-41810: Reintroduce types.EllipsisType, .NoneType & .NotImplementedType #22336

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00639fc
Reintroduced `types.EllipsisType`
Sep 18, 2020
0a97a88
Replaced `type(...)` and `type(ellipsis)` with `types.EllipsisType`
Sep 18, 2020
8aecfd5
Added `EllipsisType` to the documentation
Sep 18, 2020
4066b4b
Added Misc/NEWS.d and whatsnew entries
Sep 20, 2020
307dcc1
Updated the acknowledgements
Sep 20, 2020
9fc1381
Reintroduced `types.NoneType` and `types.NotImplementedType`
Sep 21, 2020
2791a23
Replaced `type(NotImplemented)` and `type(None)`
Sep 21, 2020
da1ab85
Added `types.NoneType` & `types.NotImplementedType` to whatsnew and t…
Sep 21, 2020
f682623
Replaced a duplicate `EllipsisType` with `NotImplementedType`
Sep 21, 2020
3701498
Provide motivation for the type reintroduction
Sep 21, 2020
33caa6f
Explicitly mention static type checkers
Sep 21, 2020
84ebe18
Revert the `type(...)` to `types....` replacements
Sep 21, 2020
23ed559
Reworded parts of the `constants` documentation
Sep 22, 2020
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Explicitly mention static type checkers
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Bas van Beek
Bas van Beek committed Sep 21, 2020
commit 33caa6fb32ec98766a9402670176ddde16d47738
4 changes: 2 additions & 2 deletions Doc/whatsnew/3.10.rst
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Expand Up @@ -149,8 +149,8 @@ types
-----

Reintroduced the :data:`types.EllipsisType`, :data:`types.NoneType`
and :data:`types.NotImplementedType` classes, aforementioned types
now being useable as annotations.
and :data:`types.NotImplementedType` classes, providing a new set
of types readily interpretable by type checkers.

@terryjreedy terryjreedy Sep 22, 2020

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I think this and the blurb are fine, providing a reason without saying either that this is the only reason or that these should be use everywhere.

(Contributed by Bas van Beek in :issue:`41810`.)

unittest
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4 changes: 2 additions & 2 deletions Misc/NEWS.d/next/Library/2020-09-20-15-14-05.bpo-41810.7l8lyV.rst
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@@ -1,3 +1,3 @@
:data:`types.EllipsisType`, :data:`types.NotImplementedType` and
:data:`types.NoneType` have been reintroduced, aforementioned types
now being useable as annotations.
:data:`types.NoneType` have been reintroduced, providing a new set
of types readily interpretable by static type checkers.