Add __name__ to _Wrapped in functools (#9835)

Author: tmke8

stdlib/functools.pyi

@@ -72,6 +72,9 @@ WRAPPER_UPDATES: tuple[Literal["__dict__"]]
 class _Wrapped(Generic[_PWrapped, _RWrapped, _PWrapper, _RWapper]):
     __wrapped__: Callable[_PWrapped, _RWrapped]
     def __call__(self, *args: _PWrapper.args, **kwargs: _PWrapper.kwargs) -> _RWapper: ...
+    # as with ``Callable``, we'll assume that these attributes exist
+    __name__: str
+    __qualname__: str
 
 class _Wrapper(Generic[_PWrapped, _RWrapped]):
     def __call__(self, f: Callable[_PWrapper, _RWapper]) -> _Wrapped[_PWrapped, _RWrapped, _PWrapper, _RWapper]: ...

test_cases/stdlib/check_functools.py

@@ -1,10 +1,31 @@
 from __future__ import annotations
 
 import sys
+from functools import wraps
+from typing import Callable, TypeVar
+from typing_extensions import ParamSpec, assert_type
+
+P = ParamSpec("P")
+T_co = TypeVar("T_co", covariant=True)
+
+
+def my_decorator(func: Callable[P, T_co]) -> Callable[P, T_co]:
+    @wraps(func)
+    def wrapper(*args: P.args, **kwargs: P.kwargs) -> T_co:
+        print(args)
+        return func(*args, **kwargs)
+
+    # verify that the wrapped function has all these attributes
+    wrapper.__annotations__ = func.__annotations__
+    wrapper.__doc__ = func.__doc__
+    wrapper.__module__ = func.__module__
+    wrapper.__name__ = func.__name__
+    wrapper.__qualname__ = func.__qualname__
+    return wrapper
+
 
 if sys.version_info >= (3, 8):
     from functools import cached_property
-    from typing_extensions import assert_type
 
     class A:
         def __init__(self, x: int):