Sourced from typing-extensions's releases.

4.9.0

This feature release adds typing_extensions.ReadOnly, as specified by PEP 705, and makes various other improvements, especially to @typing_extensions.deprecated().

There are no changes since 4.9.0rc1.

4.9.0rc1

• Add support for PEP 705, adding typing_extensions.ReadOnly. Patch by Jelle Zijlstra.
• All parameters on NewType.__call__ are now positional-only. This means that the signature of typing_extensions.NewType.__call__ now exactly matches the signature of typing.NewType.__call__. Patch by Alex Waygood.
• Fix bug with using @deprecated on a mixin class. Inheriting from a deprecated class now raises a DeprecationWarning. Patch by Jelle Zijlstra.
• @deprecated now gives a better error message if you pass a non-str argument to the msg parameter. Patch by Alex Waygood.
• @deprecated is now implemented as a class for better introspectability. Patch by Jelle Zijlstra.
• Exclude __match_args__ from Protocol members. Backport of python/cpython#110683 by Nikita Sobolev.
• When creating a typing_extensions.NamedTuple class, ensure __set_name__ is called on all objects that define __set_name__ and exist in the values of the NamedTuple class's class dictionary. Patch by Alex Waygood, backporting python/cpython#111876.
• Improve the error message when trying to call issubclass() against a Protocol that has non-method members. Patch by Alex Waygood (backporting python/cpython#112344, by Randolph Scholz).

4.8.0

Changes since 4.7.1:

• Add typing_extensions.Doc, as proposed by PEP 727. Patch by Sebastián Ramírez.
• Drop support for Python 3.7 (including PyPy-3.7). Patch by Alex Waygood.
• Fix bug where get_original_bases() would return incorrect results when called on a concrete subclass of a generic class. Patch by Alex Waygood (backporting python/cpython#107584, by James Hilton-Balfe).
• Fix bug where ParamSpec(default=...) would raise a TypeError on Python versions <3.11. Patch by James Hilton-Balfe

No changes since 4.8.0rc1.

4.8.0rc1

• Add typing_extensions.Doc, as proposed by PEP 727. Patch by Sebastián Ramírez.
• Drop support for Python 3.7 (including PyPy-3.7). Patch by Alex Waygood.
• Fix bug where get_original_bases() would return incorrect results when called on a concrete subclass of a generic class. Patch by Alex Waygood

... (truncated)

Sourced from typing-extensions's changelog.

Release 4.9.0 (December 9, 2023)

This feature release adds typing_extensions.ReadOnly, as specified by PEP 705, and makes various other improvements, especially to @typing_extensions.deprecated().

There are no changes since 4.9.0rc1.

Release 4.9.0rc1 (November 29, 2023)

• Add support for PEP 705, adding typing_extensions.ReadOnly. Patch by Jelle Zijlstra.
• All parameters on NewType.__call__ are now positional-only. This means that the signature of typing_extensions.NewType.__call__ now exactly matches the signature of typing.NewType.__call__. Patch by Alex Waygood.
• Fix bug with using @deprecated on a mixin class. Inheriting from a deprecated class now raises a DeprecationWarning. Patch by Jelle Zijlstra.
• @deprecated now gives a better error message if you pass a non-str argument to the msg parameter. Patch by Alex Waygood.
• @deprecated is now implemented as a class for better introspectability. Patch by Jelle Zijlstra.
• Exclude __match_args__ from Protocol members. Backport of python/cpython#110683 by Nikita Sobolev.
• When creating a typing_extensions.NamedTuple class, ensure __set_name__ is called on all objects that define __set_name__ and exist in the values of the NamedTuple class's class dictionary. Patch by Alex Waygood, backporting python/cpython#111876.
• Improve the error message when trying to call issubclass() against a Protocol that has non-method members. Patch by Alex Waygood (backporting python/cpython#112344, by Randolph Scholz).

Release 4.8.0 (September 17, 2023)

No changes since 4.8.0rc1.

Release 4.8.0rc1 (September 7, 2023)

• Add typing_extensions.Doc, as proposed by PEP 727. Patch by Sebastián Ramírez.
• Drop support for Python 3.7 (including PyPy-3.7). Patch by Alex Waygood.
• Fix bug where get_original_bases() would return incorrect results when called on a concrete subclass of a generic class. Patch by Alex Waygood (backporting python/cpython#107584, by James Hilton-Balfe).
• Fix bug where ParamSpec(default=...) would raise a TypeError on Python versions <3.11. Patch by James Hilton-Balfe

• fc461d6 Release 4.9.0 (#313)
• f82d636 Prepare release 4.9.0rc1 (#306)
• daa7931 Run typed-argument-parser tests on 3.12 in the daily workflow (#307)
• 0b0166d Add support for PEP 705 (#284)
• db6f9b4 Update @​deprecated implementation (#302)
• 18ae2b3 Backport recent improvements to the error message when trying to call `issubc...
• e4d9d8b fix typo in override() docstring (#305)
• 4f91502 Backport recent change to NamedTuple classes regarding __set_name__ (#303)
• 7af82f9 @​deprecated: will be in warnings, not typing (#298)
• f9f257c Fix deprecating a mixin; warn when inheriting from a deprecated class (#294)
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