Change deprecated @runtime to formal API @runtime_checkable in the error
message. Patch by Xuehai Pan.
Fix regression in 4.6.0 where attempting to define a Protocol that was
generic over a ParamSpec or a TypeVarTuple would cause TypeError to be
raised. Patch by Alex Waygood.
Add typing_extensions.Buffer, a marker class for buffer types, as proposed
by PEP 688. Equivalent to collections.abc.Buffer in Python 3.12. Patch by
Jelle Zijlstra.
Backport two CPython PRs fixing various issues with typing.Literal:
python/cpython#23294 and
python/cpython#23383. Both CPython PRs were
originally by Yurii Karabas, and both were backported to Python >=3.9.1, but
no earlier. Patch by Alex Waygood.
A side effect of one of the changes is that equality comparisons of Literal
objects will now raise a TypeError if one of the Literal objects being
compared has a mutable parameter. (Using mutable parameters with Literal is
not supported by PEP 586 or by any major static type checkers.)
Literal is now reimplemented on all Python versions <= 3.10.0. The
typing_extensions version does not suffer from the bug that was fixed in
python/cpython#29334. (The CPython bugfix was
backported to CPython 3.10.1 and 3.9.8, but no earlier.)
Backport CPython PR 26067
(originally by Yurii Karabas), ensuring that isinstance() calls on
protocols raise TypeError when the protocol is not decorated with
@runtime_checkable. Patch by Alex Waygood.
Backport several significant performance improvements to runtime-checkable
protocols that have been made in Python 3.12 (see
python/cpython#74690 for details). Patch by Alex
Waygood.
A side effect of one of the performance improvements is that the members of
a runtime-checkable protocol are now considered “frozen” at runtime as soon
as the class has been created. Monkey-patching attributes onto a
runtime-checkable protocol will still work, but will have no impact on
isinstance() checks comparing objects to the protocol. See
"What's New in Python 3.12"
for more details.
isinstance() checks against runtime-checkable protocols now use
inspect.getattr_static() rather than hasattr() to lookup whether
attributes exist (backporting python/cpython#103034).
This means that descriptors and __getattr__ methods are no longer
unexpectedly evaluated during isinstance() checks against runtime-checkable
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Updates the requirements on typing-extensions to permit the latest version.
Changelog
Sourced from typing-extensions's changelog.
... (truncated)
Commits
f62fa3fPrepare release 4.6.1 (#186)88a7f68HaveProtocolinherit fromtyping.Genericon 3.8+ (#184)b306e56Clarify error message for non@runtime_checkabledecorated protocols (#178)356934cPrepare release 4.6.0 (#177)8054a29Further simplify the implementations of the TypeVarLikes (#176)773090fRemove module assignment for TypeVar and friends (#175)bbfd0ccExtend docs intro (#168)88be907Improve the repr() of_marker(#174)9648c6fadd infer_variance for ParamSpec (#172)f2fc4cbAdd references to additional known limitations (#171)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase.Dependabot commands and options
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