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# Unreleased
- Add `typing.assert_type`. Backport from bpo-46480.
- Drop support for Python 3.6. Original patch by Adam Turner (@AA-Turner).
# Release 4.1.1 (February 13, 2022)
- Fix importing `typing_extensions` on Python 3.7.0 and 3.7.1. Original
patch by Nikita Sobolev (@sobolevn).
# Release 4.1.0 (February 12, 2022)
- Runtime support for PEP 646, adding `typing_extensions.TypeVarTuple`
and `typing_extensions.Unpack`.
- Add interaction of `Required` and `NotRequired` with `__required_keys__`,
`__optional_keys__` and `get_type_hints()`. Patch by David Cabot (@d-k-bo).
- Runtime support for PEP 675 and `typing_extensions.LiteralString`.
- Add `Never` and `assert_never`. Backport from bpo-46475.
- `ParamSpec` args and kwargs are now equal to themselves. Backport from
bpo-46676. Patch by Gregory Beauregard (@GBeauregard).
- Add `reveal_type`. Backport from bpo-46414.
- Runtime support for PEP 681 and `typing_extensions.dataclass_transform`.
- `Annotated` can now wrap `ClassVar` and `Final`. Backport from
bpo-46491. Patch by Gregory Beauregard (@GBeauregard).
- Add missed `Required` and `NotRequired` to `__all__`. Patch by
Yuri Karabas (@uriyyo).
- The `@final` decorator now sets the `__final__` attribute on the
decorated object to allow runtime introspection. Backport from
bpo-46342.
- Add `is_typeddict`. Patch by Chris Moradi (@chrismoradi) and James
Hilton-Balfe (@Gobot1234).
# Release 4.0.1 (November 30, 2021)
- Fix broken sdist in release 4.0.0. Patch by Adam Turner (@AA-Turner).
- Fix equality comparison for `Required` and `NotRequired`. Patch by
Jelle Zijlstra (@jellezijlstra).
- Fix usage of `Self` as a type argument. Patch by Chris Wesseling
(@CharString) and James Hilton-Balfe (@Gobot1234).
# Release 4.0.0 (November 14, 2021)
- Starting with version 4.0.0, typing_extensions uses Semantic Versioning.
See the README for more information.
- Dropped support for Python versions 3.5 and older, including Python 2.7.
- Simplified backports for Python 3.6.0 and newer. Patch by Adam Turner (@AA-Turner).
## Added in version 4.0.0
- Runtime support for PEP 673 and `typing_extensions.Self`. Patch by
James Hilton-Balfe (@Gobot1234).
- Runtime support for PEP 655 and `typing_extensions.Required` and `NotRequired`.
Patch by David Foster (@davidfstr).
## Removed in version 4.0.0
The following non-exported but non-private names have been removed as they are
unneeded for supporting Python 3.6 and newer.
- TypingMeta
- OLD_GENERICS
- SUBS_TREE
- HAVE_ANNOTATED
- HAVE_PROTOCOLS
- V_co
- VT_co
# Previous releases
Prior to release 4.0.0 we did not provide a changelog. Please check
the Git history for details.
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