revert something

Author: jonathandung

stdlib/weakref.pyi

@@ -144,63 +144,63 @@ class KeyedRef(ref[_T], Generic[_KT, _T]):
     def __new__(type, ob: _T, callback: Callable[[Self], Any], key: _KT) -> Self: ...
     def __init__(self, ob: _T, callback: Callable[[Self], Any], key: _KT) -> None: ...
 
-class WeakKeyDictionary(MutableMapping[_T, _VT]):
+class WeakKeyDictionary(MutableMapping[_KT, _VT]):
     @overload
     def __init__(self, dict: None = None) -> None: ...
     @overload
-    def __init__(self, dict: Mapping[_T, _VT] | Iterable[tuple[_T, _VT]]) -> None: ...
+    def __init__(self, dict: Mapping[_KT, _VT] | Iterable[tuple[_KT, _VT]]) -> None: ...
 
     def __len__(self) -> int: ...
-    def __getitem__(self, key: _T) -> _VT: ...
-    def __setitem__(self, key: _T, value: _VT) -> None: ...
-    def __delitem__(self, key: _T) -> None: ...
+    def __getitem__(self, key: _KT) -> _VT: ...
+    def __setitem__(self, key: _KT, value: _VT) -> None: ...
+    def __delitem__(self, key: _KT) -> None: ...
     def __contains__(self, key: object) -> bool: ...
-    def __iter__(self) -> Iterator[_T]: ...
-    def copy(self) -> WeakKeyDictionary[_T, _VT]: ...
+    def __iter__(self) -> Iterator[_KT]: ...
+    def copy(self) -> WeakKeyDictionary[_KT, _VT]: ...
     __copy__ = copy
     def __deepcopy__(self, memo: Any) -> Self: ...
 
     @overload
-    def get(self, key: _T, default: None = None) -> _VT | None: ...
+    def get(self, key: _KT, default: None = None) -> _VT | None: ...
     @overload
-    def get(self, key: _T, default: _VT) -> _VT: ...
+    def get(self, key: _KT, default: _VT) -> _VT: ...
     @overload
-    def get(self, key: _T, default: _T1) -> _VT | _T1: ...
+    def get(self, key: _KT, default: _T) -> _VT | _T: ...
 
     # These are incompatible with Mapping
-    def keys(self) -> Iterator[_T]: ...  # type: ignore[override]
+    def keys(self) -> Iterator[_KT]: ...  # type: ignore[override]
     def values(self) -> Iterator[_VT]: ...  # type: ignore[override]
-    def items(self) -> Iterator[tuple[_T, _VT]]: ...  # type: ignore[override]
-    def keyrefs(self) -> list[ref[_T]]: ...
+    def items(self) -> Iterator[tuple[_KT, _VT]]: ...  # type: ignore[override]
+    def keyrefs(self) -> list[ref[_KT]]: ...
 
     # Keep WeakKeyDictionary.setdefault in line with MutableMapping.setdefault, modulo positional-only differences
     @overload
-    def setdefault(self: WeakKeyDictionary[_T, _VT | None], key: _T, default: None = None) -> _VT: ...
+    def setdefault(self: WeakKeyDictionary[_KT, _VT | None], key: _KT, default: None = None) -> _VT: ...
     @overload
-    def setdefault(self, key: _T, default: _VT) -> _VT: ...
+    def setdefault(self, key: _KT, default: _VT) -> _VT: ...
 
     @overload
-    def pop(self, key: _T) -> _VT: ...
+    def pop(self, key: _KT) -> _VT: ...
     @overload
-    def pop(self, key: _T, default: _VT) -> _VT: ...
+    def pop(self, key: _KT, default: _VT) -> _VT: ...
     @overload
-    def pop(self, key: _T, default: _T1) -> _VT | _T1: ...
+    def pop(self, key: _KT, default: _T) -> _VT | _T: ...
 
     @overload
-    def update(self, dict: SupportsKeysAndGetItem[_T, _VT], /, **kwargs: _VT) -> None: ...
+    def update(self, dict: SupportsKeysAndGetItem[_KT, _VT], /, **kwargs: _VT) -> None: ...
     @overload
-    def update(self, dict: Iterable[tuple[_T, _VT]], /, **kwargs: _VT) -> None: ...
+    def update(self, dict: Iterable[tuple[_KT, _VT]], /, **kwargs: _VT) -> None: ...
     @overload
     def update(self, dict: None = None, /, **kwargs: _VT) -> None: ...
 
-    def __or__(self, other: Mapping[_T1, _T2]) -> WeakKeyDictionary[_T | _T1, _VT | _T2]: ...
-    def __ror__(self, other: Mapping[_T1, _T2]) -> WeakKeyDictionary[_T | _T1, _VT | _T2]: ...
+    def __or__(self, other: Mapping[_T1, _T2]) -> WeakKeyDictionary[_KT | _T1, _VT | _T2]: ...
+    def __ror__(self, other: Mapping[_T1, _T2]) -> WeakKeyDictionary[_KT | _T1, _VT | _T2]: ...
 
     # WeakKeyDictionary.__ior__ should be kept roughly in line with MutableMapping.update()
     @overload  # type: ignore[misc]
-    def __ior__(self, other: SupportsKeysAndGetItem[_T, _VT]) -> Self: ...
+    def __ior__(self, other: SupportsKeysAndGetItem[_KT, _VT]) -> Self: ...
     @overload
-    def __ior__(self, other: Iterable[tuple[_T, _VT]]) -> Self: ...
+    def __ior__(self, other: Iterable[tuple[_KT, _VT]]) -> Self: ...
 
 class finalize(Generic[_P, _T]):
     __slots__ = ()