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[stdlib] Add _layout_ attribute for ctypes.Structure #15091

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Merged
srittau merged 2 commits into from
Dec 1, 2025
Merged

[stdlib] Add _layout_ attribute for ctypes.Structure #15091

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f62e39b
Add `_layout_` attribute for `ctypes.Structure`
guoci Nov 28, 2025
0615c58
Update stdlib/_ctypes.pyi
guoci Dec 1, 2025
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6 changes: 5 additions & 1 deletion stdlib/_ctypes.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@ from abc import abstractmethod
from collections.abc import Callable, Iterable, Iterator, Mapping, Sequence
from ctypes import CDLL, ArgumentError as ArgumentError, c_void_p
from types import GenericAlias
from typing import Any, ClassVar, Final, Generic, TypeVar, final, overload, type_check_only
from typing import Any, ClassVar, Final, Generic, Literal, TypeVar, final, overload, type_check_only
from typing_extensions import Self, TypeAlias

_T = TypeVar("_T")
Expand Down Expand Up @@ -266,6 +266,10 @@ class Structure(_CData, metaclass=_PyCStructType):
if sys.version_info >= (3, 13):
_align_: ClassVar[int]

if sys.version_info >= (3, 14):
# _layout_ can be defined by the user, but is not always present.
_layout_: ClassVar[Literal["ms", "gcc-sysv"]]

def __init__(self, *args: Any, **kw: Any) -> None: ...
def __getattr__(self, name: str) -> Any: ...
def __setattr__(self, name: str, value: Any) -> None: ...
Expand Down