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hauntsaninja merged 3 commits into from
May 28, 2023
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Document PEP 698 and other new typing features in What's New #104957

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88d99c7
Document PEP 698 in Whats New
JelleZijlstra May 26, 2023
0c8dfb1
Remove duplicate mention of override, add two others
JelleZijlstra May 26, 2023
e460c59
Update Doc/whatsnew/3.12.rst
JelleZijlstra May 26, 2023
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Remove duplicate mention of override, add two others
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JelleZijlstra committed May 26, 2023
commit 0c8dfb15a96ebe766058201b62e35fb079ea4165
12 changes: 7 additions & 5 deletions Doc/whatsnew/3.12.rst
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Expand Up @@ -734,11 +734,6 @@ tempfile
typing
------

* Add :func:`typing.override`, an override decorator telling to static type
checkers to verify that a method overrides some method or attribute of the
same name on a base class, as per :pep:`698`. (Contributed by Steven Troxler in
:gh:`101564`.)

* :func:`isinstance` checks against
:func:`runtime-checkable protocols <typing.runtime_checkable>` now use
:func:`inspect.getattr_static` rather than :func:`hasattr` to lookup whether
Expand Down Expand Up @@ -783,6 +778,13 @@ typing
or more members may be slower than in Python 3.11. (Contributed by Alex
Waygood in :gh:`74690` and :gh:`103193`.)

* All :data:`typing.TypedDict` and :data:`typing.NamedTuple` classes now have the
``__orig_bases__`` attribute. (Contributed by Adrian Garcia Badaracco in
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@AlexWaygood AlexWaygood May 26, 2023 •
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Given that this attribute is undocumented (and I'd prefer it to stay that way, though that's not a strong opinion), could we add this something like "this ensures that types.get_original_bases(typeddict_class) will now always return the correct result"?

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@JelleZijlstra JelleZijlstra May 26, 2023

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Maybe we could say "now work reliably with :func:types.get_original_bases", although that's a bit of a vacuous statement as types.get_original_bases didn't exist before 3.12 :)

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@AlexWaygood AlexWaygood May 26, 2023

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Eh, I guess you're right, it's probably fine as it is

:gh:`103699`.)

* Add ``frozen_default`` parameter to :func:`typing.dataclass_transform`.
(Contributed by Erik De Bonte in :gh:`99957`.)

sys
---

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