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Make MemoryView Generic, make cast accurate (#12247)

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Max Muoto
2024-07-11 19:12:44 -05:00
committed by GitHub
parent 3b5b642fdb
commit 4316e00c9e
2 changed files with 75 additions and 5 deletions
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22
stdlib/builtins.pyi
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@@ -75,6 +75,7 @@ if sys.version_info >= (3, 9):
from types import GenericAlias
_T = TypeVar("_T")
_I = TypeVar("_I", default=int)
_T_co = TypeVar("_T_co", covariant=True)
_T_contra = TypeVar("_T_contra", contravariant=True)
_R_co = TypeVar("_R_co", covariant=True)
@@ -823,8 +824,12 @@ class bytearray(MutableSequence[int]):
def __buffer__(self, flags: int, /) -> memoryview: ...
def __release_buffer__(self, buffer: memoryview, /) -> None: ...
_IntegerFormats: TypeAlias = Literal[
"b", "B", "@b", "@B", "h", "H", "@h", "@H", "i", "I", "@i", "@I", "l", "L", "@l", "@L", "q", "Q", "@q", "@Q", "P", "@P"
]
@final
class memoryview(Sequence[int]):
class memoryview(Sequence[_I]):
@property
def format(self) -> str: ...
@property
@@ -854,13 +859,20 @@ class memoryview(Sequence[int]):
def __exit__(
self, exc_type: type[BaseException] | None, exc_val: BaseException | None, exc_tb: TracebackType | None, /
) -> None: ...
def cast(self, format: str, shape: list[int] | tuple[int, ...] = ...) -> memoryview: ...
@overload
def __getitem__(self, key: SupportsIndex | tuple[SupportsIndex, ...], /) -> int: ...
def cast(self, format: Literal["c", "@c"], shape: list[int] | tuple[int, ...] = ...) -> memoryview[bytes]: ...
@overload
def __getitem__(self, key: slice, /) -> memoryview: ...
def cast(self, format: Literal["f", "@f", "d", "@d"], shape: list[int] | tuple[int, ...] = ...) -> memoryview[float]: ...
@overload
def cast(self, format: Literal["?"], shape: list[int] | tuple[int, ...] = ...) -> memoryview[bool]: ...
@overload
def cast(self, format: _IntegerFormats, shape: list[int] | tuple[int, ...] = ...) -> memoryview: ...
@overload
def __getitem__(self, key: SupportsIndex | tuple[SupportsIndex, ...], /) -> _I: ...
@overload
def __getitem__(self, key: slice, /) -> memoryview[_I]: ...
def __contains__(self, x: object, /) -> bool: ...
def __iter__(self) -> Iterator[int]: ...
def __iter__(self) -> Iterator[_I]: ...
def __len__(self) -> int: ...
def __eq__(self, value: object, /) -> bool: ...
def __hash__(self) -> int: ...