Add broad definition for c_bool constructor

stdlib/@tests/test_cases/ctypes/check_bool.py

@@ -0,0 +1,25 @@
+import ctypes
+from typing_extensions import assert_type
+
+
+class Foo:
+    def __bool__(self) -> bool:
+        return True
+
+
+class Bar:
+    def __len__(self) -> int:
+        return 1
+
+
+assert_type(ctypes.c_bool(True), ctypes.c_bool)
+assert_type(ctypes.c_bool(0), ctypes.c_bool)
+assert_type(ctypes.c_bool([]), ctypes.c_bool)
+assert_type(ctypes.c_bool({}), ctypes.c_bool)
+assert_type(ctypes.c_bool(()), ctypes.c_bool)
+assert_type(ctypes.c_bool(set[str]()), ctypes.c_bool)
+assert_type(ctypes.c_bool(1.5), ctypes.c_bool)
+assert_type(ctypes.c_bool("non-empty"), ctypes.c_bool)
+assert_type(ctypes.c_bool(None), ctypes.c_bool)
+assert_type(ctypes.c_bool(Foo()), ctypes.c_bool)
+assert_type(ctypes.c_bool(Bar()), ctypes.c_bool)

stdlib/_typeshed/__init__.pyi

@@ -142,6 +142,9 @@ class SupportsIter(Protocol[_T_co]):
 class SupportsAiter(Protocol[_T_co]):
     def __aiter__(self) -> _T_co: ...
 
+class SupportsLen(Protocol):
+    def __len__(self) -> int: ...
+
 class SupportsLenAndGetItem(Protocol[_T_co]):
     def __len__(self) -> int: ...
     def __getitem__(self, k: int, /) -> _T_co: ...

stdlib/ctypes/__init__.pyi

@@ -23,7 +23,7 @@ from _ctypes import (
     set_errno as set_errno,
     sizeof as sizeof,
 )
-from _typeshed import StrPath
+from _typeshed import StrPath, SupportsBool, SupportsLen
 from ctypes._endian import BigEndianStructure as BigEndianStructure, LittleEndianStructure as LittleEndianStructure
 from types import GenericAlias
 from typing import Any, ClassVar, Final, Generic, Literal, TypeVar, overload, type_check_only
@@ -217,7 +217,7 @@ class py_object(_CanCastTo, _SimpleCData[_T]):
 
 class c_bool(_SimpleCData[bool]):
     _type_: ClassVar[Literal["?"]]
-    def __init__(self, value: bool = ...) -> None: ...
+    def __init__(self, value: SupportsBool | SupportsLen | None = ...) -> None: ...
 
 class c_byte(_SimpleCData[int]):
     _type_: ClassVar[Literal["b"]]