Use PEP 570 syntax in stdlib (#11250)

stdlib/_ctypes.pyi

@@ -44,8 +44,8 @@ if sys.platform == "win32":
     def FormatError(code: int = ...) -> str: ...
     def get_last_error() -> int: ...
     def set_last_error(value: int) -> int: ...
-    def LoadLibrary(__name: str, __load_flags: int = 0) -> int: ...
-    def FreeLibrary(__handle: int) -> None: ...
+    def LoadLibrary(name: str, load_flags: int = 0, /) -> int: ...
+    def FreeLibrary(handle: int, /) -> None: ...
 
 class _CDataMeta(type):
     # By default mypy complains about the following two methods, because strictly speaking cls
@@ -75,8 +75,8 @@ class _CData(metaclass=_CDataMeta):
     def from_param(cls, obj: Any) -> Self | _CArgObject: ...
     @classmethod
     def in_dll(cls, library: CDLL, name: str) -> Self: ...
-    def __buffer__(self, __flags: int) -> memoryview: ...
-    def __release_buffer__(self, __buffer: memoryview) -> None: ...
+    def __buffer__(self, flags: int, /) -> memoryview: ...
+    def __release_buffer__(self, buffer: memoryview, /) -> None: ...
 
 class _SimpleCData(_CData, Generic[_T]):
     value: _T
@@ -95,13 +95,13 @@ class _Pointer(_PointerLike, _CData, Generic[_CT]):
     @overload
     def __init__(self, arg: _CT) -> None: ...
     @overload
-    def __getitem__(self, __key: int) -> Any: ...
+    def __getitem__(self, key: int, /) -> Any: ...
     @overload
-    def __getitem__(self, __key: slice) -> list[Any]: ...
-    def __setitem__(self, __key: int, __value: Any) -> None: ...
+    def __getitem__(self, key: slice, /) -> list[Any]: ...
+    def __setitem__(self, key: int, value: Any, /) -> None: ...
 
 def POINTER(type: type[_CT]) -> type[_Pointer[_CT]]: ...
-def pointer(__arg: _CT) -> _Pointer[_CT]: ...
+def pointer(arg: _CT, /) -> _Pointer[_CT]: ...
 
 class _CArgObject: ...
 
@@ -119,15 +119,15 @@ class CFuncPtr(_PointerLike, _CData):
     @overload
     def __init__(self) -> None: ...
     @overload
-    def __init__(self, __address: int) -> None: ...
+    def __init__(self, address: int, /) -> None: ...
     @overload
-    def __init__(self, __callable: Callable[..., Any]) -> None: ...
+    def __init__(self, callable: Callable[..., Any], /) -> None: ...
     @overload
-    def __init__(self, __func_spec: tuple[str | int, CDLL], __paramflags: tuple[_PF, ...] | None = ...) -> None: ...
+    def __init__(self, func_spec: tuple[str | int, CDLL], paramflags: tuple[_PF, ...] | None = ..., /) -> None: ...
     if sys.platform == "win32":
         @overload
         def __init__(
-            self, __vtbl_index: int, __name: str, __paramflags: tuple[_PF, ...] | None = ..., __iid: _CData | None = ...
+            self, vtbl_index: int, name: str, paramflags: tuple[_PF, ...] | None = ..., iid: _CData | None = ..., /
         ) -> None: ...
 
     def __call__(self, *args: Any, **kwargs: Any) -> Any: ...
@@ -139,10 +139,10 @@ class _CField(Generic[_CT, _GetT, _SetT]):
     offset: int
     size: int
     @overload
-    def __get__(self, __instance: None, __owner: type[Any] | None) -> Self: ...
+    def __get__(self, instance: None, owner: type[Any] | None, /) -> Self: ...
     @overload
-    def __get__(self, __instance: Any, __owner: type[Any] | None) -> _GetT: ...
-    def __set__(self, __instance: Any, __value: _SetT) -> None: ...
+    def __get__(self, instance: Any, owner: type[Any] | None, /) -> _GetT: ...
+    def __set__(self, instance: Any, value: _SetT, /) -> None: ...
 
 class _StructUnionMeta(_CDataMeta):
     _fields_: Sequence[tuple[str, type[_CData]] | tuple[str, type[_CData], int]]
@@ -189,13 +189,13 @@ class Array(_CData, Generic[_CT]):
     # the array element type would belong are annotated with Any instead.
     def __init__(self, *args: Any) -> None: ...
     @overload
-    def __getitem__(self, __key: int) -> Any: ...
+    def __getitem__(self, key: int, /) -> Any: ...
     @overload
-    def __getitem__(self, __key: slice) -> list[Any]: ...
+    def __getitem__(self, key: slice, /) -> list[Any]: ...
     @overload
-    def __setitem__(self, __key: int, __value: Any) -> None: ...
+    def __setitem__(self, key: int, value: Any, /) -> None: ...
     @overload
-    def __setitem__(self, __key: slice, __value: Iterable[Any]) -> None: ...
+    def __setitem__(self, key: slice, value: Iterable[Any], /) -> None: ...
     def __iter__(self) -> Iterator[Any]: ...
     # Can't inherit from Sized because the metaclass conflict between
     # Sized and _CData prevents using _CDataMeta.