gh-101688: Implement types.get_original_bases by Gobot1234 · Pull Request #101827 · python/cpython (original) (raw)

Implements the methods described.

A couple of questions:

• Should there be checking of the return types of the functions since they could be anything?
• Should we add __orig_class__ to the slots of all the types that currently don't have them to provide better introspection support (currently get_orig_class(list[int]()) is None)
• Issue: Add typing.get_orig_bases and typing.get_orig_class #101688

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👍

Gobot1234 changed the titlegh-101688: Implement typing.get_orig_class and get_orig_bases gh-101688: Implement typing.get_orig_class and types.get_orig_bases

Feb 25, 2023

Conflicts:

Lib/test/test_typing.py

Co-authored-by: Alex Waygood Alex.Waygood@Gmail.com

@gvanrossum, how's this look to you now? Any more suggestions re. the docs?

Who is musashay? Spammer? Bot?

Who is musashay? Spammer? Bot?

No idea

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Still not excited about the use of assert. Do we do this often in other examples?

Still not excited about the use of assert. Do we do this often in other examples?

I feel like the closest stdlib analogues to this function are typing.get_args and typing.get_origin, and it's what we do there:

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Okay, sold.

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I meant to approve.

I'll merge once the CI finishes.

@Gobot1234, are you up for adding a stub to typeshed and backporting it to typing_extensions? I can probably take a look soon, if you haven't got the time.

I can probably do the typeshed stub tonight but I don't know when I'll get to the typing extensions backport

kraj pushed a commit to YoeDistro/poky that referenced this pull request

Jun 1, 2023

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 wangmy@fujitsu.com Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com

rpurdie pushed a commit to yoctoproject/poky that referenced this pull request

Jun 2, 2023

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 wangmy@fujitsu.com Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Richard Purdie richard.purdie@linuxfoundation.org

halstead pushed a commit to openembedded/openembedded-core that referenced this pull request

Jun 2, 2023

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 wangmy@fujitsu.com Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com

renovate bot referenced this pull request in allenporter/flux-local

Jun 3, 2023

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
typing-extensions
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==4.5.0 -> ==4.6.3
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daregit pushed a commit to daregit/yocto-combined that referenced this pull request

May 22, 2024

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 wangmy@fujitsu.com Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Richard Purdie richard.purdie@linuxfoundation.org