Update typing-extensions to 4.8.0

[pyup-bot]

This PR updates typing-extensions from 4.5.0 to 4.8.0.

Changelog

4.8.0

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
(backporting https://github.com/python/cpython/pull/107584, by James
Hilton-Balfe).
- Fix bug where `ParamSpec(default=...)` would raise a `TypeError` on Python
versions <3.11. Patch by James Hilton-Balfe

4.7.1

- Fix support for `TypedDict`, `NamedTuple` and `is_protocol` on PyPy-3.7 and
PyPy-3.8. Patch by Alex Waygood. Note that PyPy-3.7 and PyPy-3.8 are unsupported
by the PyPy project. The next feature release of typing-extensions will
drop support for PyPy-3.7 and may also drop support for PyPy-3.8.

4.7.0

- This is expected to be the last feature release supporting Python 3.7,
which reaches its end of life on June 27, 2023. Version 4.8.0 will support
only Python 3.8.0 and up.
- Fix bug where a `typing_extensions.Protocol` class that had one or more
non-callable members would raise `TypeError` when `issubclass()`
was called against it, even if it defined a custom `__subclasshook__`
method. The correct behaviour -- which has now been restored -- is not to
raise `TypeError` in these situations if a custom `__subclasshook__` method
is defined. Patch by Alex Waygood (backporting
https://github.com/python/cpython/pull/105976).

4.7.0rc1

- Add `typing_extensions.get_protocol_members` and
`typing_extensions.is_protocol` (backport of CPython PR 104878).
Patch by Jelle Zijlstra.
- `typing_extensions` now re-exports all names in the standard library's
`typing` module, except the deprecated `ByteString`. Patch by Jelle
Zijlstra.
- Due to changes in the implementation of `typing_extensions.Protocol`,
`typing.runtime_checkable` can now be used on `typing_extensions.Protocol`
(previously, users had to use `typing_extensions.runtime_checkable` if they
were using `typing_extensions.Protocol`).
- Align the implementation of `TypedDict` with the implementation in the
standard library on Python 3.9 and higher.
`typing_extensions.TypedDict` is now a function instead of a class. The
private functions `_check_fails`, `_dict_new`, and `_typeddict_new`
have been removed. `is_typeddict` now returns `False` when called with
`TypedDict` itself as the argument. Patch by Jelle Zijlstra.
- Declare support for Python 3.12. Patch by Jelle Zijlstra.
- Fix tests on Python 3.13, which removes support for creating
`TypedDict` classes through the keyword-argument syntax. Patch by
Jelle Zijlstra.
- Fix a regression introduced in v4.6.3 that meant that
``issubclass(object, typing_extensions.Protocol)`` would erroneously raise
``TypeError``. Patch by Alex Waygood (backporting the CPython PR
https://github.com/python/cpython/pull/105239).
- Allow `Protocol` classes to inherit from `typing_extensions.Buffer` or
`collections.abc.Buffer`. Patch by Alex Waygood (backporting
https://github.com/python/cpython/pull/104827, by Jelle Zijlstra).
- Allow classes to inherit from both `typing.Protocol` and `typing_extensions.Protocol`
simultaneously. Since v4.6.0, this caused `TypeError` to be raised due to a
metaclass conflict. Patch by Alex Waygood.
- Backport several deprecations from CPython relating to unusual ways to
create `TypedDict`s and `NamedTuple`s. CPython PRs 105609 and 105780
by Alex Waygood; `typing_extensions` backport by Jelle Zijlstra.
- Creating a `NamedTuple` using the functional syntax with keyword arguments
 (`NT = NamedTuple("NT", a=int)`) is now deprecated.
- Creating a `NamedTuple` with zero fields using the syntax `NT = NamedTuple("NT")`
 or `NT = NamedTuple("NT", None)` is now deprecated.
- Creating a `TypedDict` with zero fields using the syntax `TD = TypedDict("TD")`
 or `TD = TypedDict("TD", None)` is now deprecated.
- Fix bug on Python 3.7 where a protocol `X` that had a member `a` would not be
considered an implicit subclass of an unrelated protocol `Y` that only has a
member `a`. Where the members of `X` are a superset of the members of `Y`,
`X` should always be considered a subclass of `Y` iff `Y` is a
runtime-checkable protocol that only has callable members. Patch by Alex
Waygood (backporting CPython PR
https://github.com/python/cpython/pull/105835).

4.6.3

- Fix a regression introduced in v4.6.0 in the implementation of
runtime-checkable protocols. The regression meant
that doing `class Foo(X, typing_extensions.Protocol)`, where `X` was a class that
had `abc.ABCMeta` as its metaclass, would then cause subsequent
`isinstance(1, X)` calls to erroneously raise `TypeError`. Patch by
Alex Waygood (backporting the CPython PR
https://github.com/python/cpython/pull/105152).
- Sync the repository's LICENSE file with that of CPython.
`typing_extensions` is distributed under the same license as
CPython itself.
- Skip a problematic test on Python 3.12.0b1. The test fails on 3.12.0b1 due to
a bug in CPython, which will be fixed in 3.12.0b2. The
`typing_extensions` test suite now passes on 3.12.0b1.

4.6.2

- Fix use of `deprecated` on classes with `__new__` but no `__init__`.
Patch by Jelle Zijlstra.
- Fix regression in version 4.6.1 where comparing a generic class against a
runtime-checkable protocol using `isinstance()` would cause `AttributeError`
to be raised if using Python 3.7.

4.6.1

- 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.

4.6.0

- `typing_extensions` is now documented at
https://typing-extensions.readthedocs.io/en/latest/. Patch by Jelle Zijlstra.
- 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`:
https://github.com/python/cpython/pull/23294 and
https://github.com/python/cpython/pull/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
https://github.com/python/cpython/pull/29334. (The CPython bugfix was
backported to CPython 3.10.1 and 3.9.8, but no earlier.)
- Backport [CPython PR 26067](https://github.com/python/cpython/pull/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
https://github.com/python/cpython/issues/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"](https://docs.python.org/3.12/whatsnew/3.12.html#typing)
for more details.
- `isinstance()` checks against runtime-checkable protocols now use
`inspect.getattr_static()` rather than `hasattr()` to lookup whether
attributes exist (backporting https://github.com/python/cpython/pull/103034).
This means that descriptors and `__getattr__` methods are no longer
unexpectedly evaluated during `isinstance()` checks against runtime-checkable
protocols. However, it may also mean that some objects which used to be
considered instances of a runtime-checkable protocol on older versions of
`typing_extensions` may no longer be considered instances of that protocol
using the new release, and vice versa. Most users are unlikely to be affected
by this change. Patch by Alex Waygood.
- Backport the ability to define `__init__` methods on Protocol classes, a
change made in Python 3.11 (originally implemented in
https://github.com/python/cpython/pull/31628 by Adrian Garcia Badaracco).
Patch by Alex Waygood.
- Speedup `isinstance(3, typing_extensions.SupportsIndex)` by >10x on Python
<3.12. Patch by Alex Waygood.
- Add `typing_extensions` versions of `SupportsInt`, `SupportsFloat`,
`SupportsComplex`, `SupportsBytes`, `SupportsAbs` and `SupportsRound`. These
have the same semantics as the versions from the `typing` module, but
`isinstance()` checks against the `typing_extensions` versions are >10x faster
at runtime on Python <3.12. Patch by Alex Waygood.
- Add `__orig_bases__` to non-generic TypedDicts, call-based TypedDicts, and
call-based NamedTuples. Other TypedDicts and NamedTuples already had the attribute.
Patch by Adrian Garcia Badaracco.
- Add `typing_extensions.get_original_bases`, a backport of
[`types.get_original_bases`](https://docs.python.org/3.12/library/types.html#types.get_original_bases),
introduced in Python 3.12 (CPython PR
https://github.com/python/cpython/pull/101827, originally by James
Hilton-Balfe). Patch by Alex Waygood.

This function should always produce correct results when called on classes
constructed using features from `typing_extensions`. However, it may
produce incorrect results when called on some `NamedTuple` or `TypedDict`
classes that use `typing.{NamedTuple,TypedDict}` on Python <=3.11.
- Constructing a call-based `TypedDict` using keyword arguments for the fields
now causes a `DeprecationWarning` to be emitted. This matches the behaviour
of `typing.TypedDict` on 3.11 and 3.12.
- Backport the implementation of `NewType` from 3.10 (where it is implemented
as a class rather than a function). This allows user-defined `NewType`s to be
pickled. Patch by Alex Waygood.
- Fix tests and import on Python 3.12, where `typing.TypeVar` can no longer be
subclassed. Patch by Jelle Zijlstra.
- Add `typing_extensions.TypeAliasType`, a backport of `typing.TypeAliasType`
from PEP 695. Patch by Jelle Zijlstra.
- Backport changes to the repr of `typing.Unpack` that were made in order to
implement [PEP 692](https://peps.python.org/pep-0692/) (backport of
https://github.com/python/cpython/pull/104048). Patch by Alex Waygood.

Links

• PyPI: https://pypi.org/project/typing-extensions
• Changelog: https://data.safetycli.com/changelogs/typing-extensions/