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bpo-42345: Fix hash implementation of typing.Literal #23383

Merged
merged 2 commits into from
Nov 19, 2020
Merged

bpo-42345: Fix hash implementation of typing.Literal #23383

merged 2 commits into from
Nov 19, 2020

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uriyyo
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@uriyyo uriyyo commented Nov 18, 2020 •
edited by miss-islington
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Fix hash implementation of typing.Literal.

Update docs regarding typing.Litaral caching.

Base implementation was done in PR #23294.

https://bugs.python.org/issue42345

Automerge-Triggered-By: GH:gvanrossum

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uriyyo commented Nov 18, 2020 •
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@gvanrossum Should we add Misc/NEWS.d/next/ or skip news label can be used?

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LGTM. This probbly doesn't need a news item, it can share the news item from the original PR.

gvanrossum
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@uriyyo uriyyo requested a review from gvanrossum November 19, 2020 07:44
@gvanrossum gvanrossum changed the title bpo-42345: Fix hash implementation of a typing.Literal bpo-42345: Fix hash implementation of typing.Literal Nov 19, 2020
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Sorry, I can't merge this PR. Reason: Base branch was modified. Review and try the merge again..

@miss-islington miss-islington merged commit 1b54077 into python:master Nov 19, 2020
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Thanks @uriyyo for the PR 🌮🎉.. I'm working now to backport this PR to: 3.9.
🐍🍒⛏🤖

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Nov 19, 2020
@uriyyo @miss-islington
bpo-42345: Fix hash implementation of typing.Literal (pythonGH-23383)
15eb339 
Fix hash implementation of `typing.Literal`.

Update docs regarding `typing.Litaral` caching.

Base implementation was done in PR pythonGH-23294.
(cherry picked from commit 1b54077)

Co-authored-by: Yurii Karabas <[email protected]>
@bedevere-bot
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GH-23408 is a backport of this pull request to the 3.9 branch.

@bedevere-bot bedevere-bot removed the needs backport to 3.9 only security fixes label Nov 19, 2020
miss-islington added a commit that referenced this pull request Nov 19, 2020
@miss-islington @uriyyo
bpo-42345: Fix hash implementation of typing.Literal (GH-23383)
2acd9d0 
Fix hash implementation of `typing.Literal`.

Update docs regarding `typing.Litaral` caching.

Base implementation was done in PR GH-23294.
(cherry picked from commit 1b54077)

Co-authored-by: Yurii Karabas <[email protected]>
adorilson pushed a commit to adorilson/cpython that referenced this pull request Mar 13, 2021
@uriyyo @adorilson
bpo-42345: Fix hash implementation of typing.Literal (pythonGH-23383)
d19e1a1 
Fix hash implementation of `typing.Literal`.

Update docs regarding `typing.Litaral` caching.

Base implementation was done in PR python#23294.
@AlexWaygood AlexWaygood mentioned this pull request Apr 17, 2023
Merged
kraj pushed a commit to YoeDistro/poky that referenced this pull request Jun 1, 2023
@wangmingyu84 @alexandrebelloni
python3-typing-extensions: upgrade 4.5.0 -> 4.6.2
d66bbb5 
Changelog:
============
-  Fix use of @deprecated on classes with __new__ but no __init__.
-  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.
-  Change deprecated @runtime to formal API @runtime_checkable in the error message.
-  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.
-  typing_extensions is now documented at https://typing-extensions.readthedocs.io/en/latest/.
-  Add typing_extensions.Buffer, a marker class for buffer types, as proposed
   by PEP 688. Equivalent to collections.abc.Buffer in Python 3.12.
-  Backport two CPython PRs fixing various issues with typing.Literal:
   python/cpython#23294 and python/cpython#23383. Both CPython PRs were originally,
   and both were backported to Python >=3.9.1, but no earlier.
-  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.
-  Backport CPython PR 26067, ensuring that isinstance() calls on protocols raise
   TypeError when the protocol is not decorated with @runtime_checkable.
-  Backport several significant performance improvements to runtime-checkable protocols
   that have been made in Python 3.12 (see python/cpython#74690 for details).
-  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).
-  Backport the ability to define __init__ methods on Protocol classes, a change
   made in Python 3.11 (originally implemented in python/cpython#31628
-  Speedup isinstance(3, typing_extensions.SupportsIndex) by >10x on Python <3.12.
-  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.
-  Add __orig_bases__ to non-generic TypedDicts, call-based TypedDicts, and call-based NamedTuples.
-  Add typing_extensions.get_original_bases, a backport of types.get_original_bases,
   introduced in Python 3.12 (CPython PR python/cpython#101827, originally
-  This function should always produce correct results when called on classes
   constructed using features from typing_extensions.
-  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 NewTypes to be pickled.
-  Fix tests and import on Python 3.12, where typing.TypeVar can no longer be subclassed.
-  Add typing_extensions.TypeAliasType, a backport of typing.TypeAliasType from PEP 695.
-  Backport changes to the repr of typing.Unpack that were made in order
   to implement PEP 692 (backport of python/cpython#104048).

(From OE-Core rev: 2b1d07c7deb4f0247765bc737fb11a1747143edf)

Signed-off-by: Wang Mingyu <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
rpurdie pushed a commit to yoctoproject/poky that referenced this pull request Jun 2, 2023
@wangmingyu84 @rpurdie
python3-typing-extensions: upgrade 4.5.0 -> 4.6.2
674b2c8 
Changelog:
============
-  Fix use of @deprecated on classes with __new__ but no __init__.
-  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.
-  Change deprecated @runtime to formal API @runtime_checkable in the error message.
-  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.
-  typing_extensions is now documented at https://typing-extensions.readthedocs.io/en/latest/.
-  Add typing_extensions.Buffer, a marker class for buffer types, as proposed
   by PEP 688. Equivalent to collections.abc.Buffer in Python 3.12.
-  Backport two CPython PRs fixing various issues with typing.Literal:
   python/cpython#23294 and python/cpython#23383. Both CPython PRs were originally,
   and both were backported to Python >=3.9.1, but no earlier.
-  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.
-  Backport CPython PR 26067, ensuring that isinstance() calls on protocols raise
   TypeError when the protocol is not decorated with @runtime_checkable.
-  Backport several significant performance improvements to runtime-checkable protocols
   that have been made in Python 3.12 (see python/cpython#74690 for details).
-  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).
-  Backport the ability to define __init__ methods on Protocol classes, a change
   made in Python 3.11 (originally implemented in python/cpython#31628
-  Speedup isinstance(3, typing_extensions.SupportsIndex) by >10x on Python <3.12.
-  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.
-  Add __orig_bases__ to non-generic TypedDicts, call-based TypedDicts, and call-based NamedTuples.
-  Add typing_extensions.get_original_bases, a backport of types.get_original_bases,
   introduced in Python 3.12 (CPython PR python/cpython#101827, originally
-  This function should always produce correct results when called on classes
   constructed using features from typing_extensions.
-  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 NewTypes to be pickled.
-  Fix tests and import on Python 3.12, where typing.TypeVar can no longer be subclassed.
-  Add typing_extensions.TypeAliasType, a backport of typing.TypeAliasType from PEP 695.
-  Backport changes to the repr of typing.Unpack that were made in order
   to implement PEP 692 (backport of python/cpython#104048).

(From OE-Core rev: a37154b9166323d05cca970ebb37bee0d5250893)

Signed-off-by: Wang Mingyu <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
Signed-off-by: Richard Purdie <[email protected]>
halstead pushed a commit to openembedded/openembedded-core that referenced this pull request Jun 2, 2023
@wangmingyu84 @rpurdie
python3-typing-extensions: upgrade 4.5.0 -> 4.6.2
a37154b 
Changelog:
============
-  Fix use of @deprecated on classes with __new__ but no __init__.
-  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.
-  Change deprecated @runtime to formal API @runtime_checkable in the error message.
-  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.
-  typing_extensions is now documented at https://typing-extensions.readthedocs.io/en/latest/.
-  Add typing_extensions.Buffer, a marker class for buffer types, as proposed
   by PEP 688. Equivalent to collections.abc.Buffer in Python 3.12.
-  Backport two CPython PRs fixing various issues with typing.Literal:
   python/cpython#23294 and python/cpython#23383. Both CPython PRs were originally,
   and both were backported to Python >=3.9.1, but no earlier.
-  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.
-  Backport CPython PR 26067, ensuring that isinstance() calls on protocols raise
   TypeError when the protocol is not decorated with @runtime_checkable.
-  Backport several significant performance improvements to runtime-checkable protocols
   that have been made in Python 3.12 (see python/cpython#74690 for details).
-  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).
-  Backport the ability to define __init__ methods on Protocol classes, a change
   made in Python 3.11 (originally implemented in python/cpython#31628
-  Speedup isinstance(3, typing_extensions.SupportsIndex) by >10x on Python <3.12.
-  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.
-  Add __orig_bases__ to non-generic TypedDicts, call-based TypedDicts, and call-based NamedTuples.
-  Add typing_extensions.get_original_bases, a backport of types.get_original_bases,
   introduced in Python 3.12 (CPython PR python/cpython#101827, originally
-  This function should always produce correct results when called on classes
   constructed using features from typing_extensions.
-  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 NewTypes to be pickled.
-  Fix tests and import on Python 3.12, where typing.TypeVar can no longer be subclassed.
-  Add typing_extensions.TypeAliasType, a backport of typing.TypeAliasType from PEP 695.
-  Backport changes to the repr of typing.Unpack that were made in order
   to implement PEP 692 (backport of python/cpython#104048).

Signed-off-by: Wang Mingyu <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
renovate bot referenced this pull request in allenporter/flux-local Jun 3, 2023
@renovate
Update dependency typing-extensions to v4.6.3 (#224)
b61076e 
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Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [typing-extensions](https://togithub.com/python/typing_extensions)
([changelog](https://togithub.com/python/typing_extensions/blob/main/CHANGELOG.md))
| `==4.5.0` -> `==4.6.3` |
[![age](https://badges.renovateapi.com/packages/pypi/typing-extensions/4.6.3/age-slim)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://badges.renovateapi.com/packages/pypi/typing-extensions/4.6.3/adoption-slim)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://badges.renovateapi.com/packages/pypi/typing-extensions/4.6.3/compatibility-slim/4.5.0)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://badges.renovateapi.com/packages/pypi/typing-extensions/4.6.3/confidence-slim/4.5.0)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>python/typing_extensions</summary>

###
[`v4.6.3`](https://togithub.com/python/typing_extensions/blob/HEAD/CHANGELOG.md#Release-463-June-1-2023)

[Compare
Source](https://togithub.com/python/typing_extensions/compare/4.6.2...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[https://github.com/python/cpython/pull/105152](https://togithub.com/python/cpython/pull/105152)l/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.

###
[`v4.6.2`](https://togithub.com/python/typing_extensions/blob/HEAD/CHANGELOG.md#Release-462-May-25-2023)

[Compare
Source](https://togithub.com/python/typing_extensions/compare/4.6.1...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.

###
[`v4.6.1`](https://togithub.com/python/typing_extensions/blob/HEAD/CHANGELOG.md#Release-461-May-23-2023)

[Compare
Source](https://togithub.com/python/typing_extensions/compare/4.6.0...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.

###
[`v4.6.0`](https://togithub.com/python/typing_extensions/blob/HEAD/CHANGELOG.md#Release-460-May-22-2023)

[Compare
Source](https://togithub.com/python/typing_extensions/compare/4.5.0...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](https://togithub.com/python/cpython/pull/23294)3294
[https://github.com/python/cpython/pull/23383](https://togithub.com/python/cpython/pull/23383)ll/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](https://togithub.com/python/cpython/pull/29334)9334.
(The CPython bugfix was
    backported to CPython 3.10.1 and 3.9.8, but no earlier.)
- Backport [CPython PR
26067](https://togithub.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
([https://github.com/python/cpython/issues/74690](https://togithub.com/python/cpython/issues/74690)es/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
(backport[https://github.com/python/cpython/pull/103034](https://togithub.com/python/cpython/pull/103034)3034).
    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[https://github.com/python/cpython/pull/31628](https://togithub.com/python/cpython/pull/31628)ll/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[https://github.com/python/cpython/pull/101827](https://togithub.com/python/cpython/pull/101827)l/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](https://togithub.com/python/cpython/pull/104048)4048).
Patch by Alex Waygood.

</details>

---

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daregit pushed a commit to daregit/yocto-combined that referenced this pull request May 22, 2024
@wangmingyu84 @rpurdie
src/poky:python3-typing-extensions: upgrade 4.5.0 -> 4.6.2
b08fcef 
Changelog:
============
-  Fix use of @deprecated on classes with __new__ but no __init__.
-  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.
-  Change deprecated @runtime to formal API @runtime_checkable in the error message.
-  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.
-  typing_extensions is now documented at https://typing-extensions.readthedocs.io/en/latest/.
-  Add typing_extensions.Buffer, a marker class for buffer types, as proposed
   by PEP 688. Equivalent to collections.abc.Buffer in Python 3.12.
-  Backport two CPython PRs fixing various issues with typing.Literal:
   python/cpython#23294 and python/cpython#23383. Both CPython PRs were originally,
   and both were backported to Python >=3.9.1, but no earlier.
-  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.
-  Backport CPython PR 26067, ensuring that isinstance() calls on protocols raise
   TypeError when the protocol is not decorated with @runtime_checkable.
-  Backport several significant performance improvements to runtime-checkable protocols
   that have been made in Python 3.12 (see python/cpython#74690 for details).
-  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).
-  Backport the ability to define __init__ methods on Protocol classes, a change
   made in Python 3.11 (originally implemented in python/cpython#31628
-  Speedup isinstance(3, typing_extensions.SupportsIndex) by >10x on Python <3.12.
-  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.
-  Add __orig_bases__ to non-generic TypedDicts, call-based TypedDicts, and call-based NamedTuples.
-  Add typing_extensions.get_original_bases, a backport of types.get_original_bases,
   introduced in Python 3.12 (CPython PR python/cpython#101827, originally
-  This function should always produce correct results when called on classes
   constructed using features from typing_extensions.
-  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 NewTypes to be pickled.
-  Fix tests and import on Python 3.12, where typing.TypeVar can no longer be subclassed.
-  Add typing_extensions.TypeAliasType, a backport of typing.TypeAliasType from PEP 695.
-  Backport changes to the repr of typing.Unpack that were made in order
   to implement PEP 692 (backport of python/cpython#104048).

(From OE-Core rev: a37154b9166323d05cca970ebb37bee0d5250893)

Signed-off-by: Wang Mingyu <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
Signed-off-by: Richard Purdie <[email protected]>
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@Fidget-Spinner Fidget-Spinner Fidget-Spinner approved these changes

@gvanrossum gvanrossum gvanrossum approved these changes

@ilevkivskyi ilevkivskyi Awaiting requested review from ilevkivskyi

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