set difference strictly (#3886)

Fixes #1840
python · Sep 17, 2020 · b186563 · b186563
1 parent 98667b1
commit b186563
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diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
@@ -1077,8 +1077,8 @@ class set(MutableSet[_T], Generic[_T]):
     def __iand__(self, s: AbstractSet[object]) -> Set[_T]: ...
     def __or__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
     def __ior__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
-    def __sub__(self, s: AbstractSet[object]) -> Set[_T]: ...
-    def __isub__(self, s: AbstractSet[object]) -> Set[_T]: ...
+    def __sub__(self, s: AbstractSet[_T]) -> Set[_T]: ...
+    def __isub__(self, s: AbstractSet[_T]) -> Set[_T]: ...
     def __xor__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
     def __ixor__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
     def __le__(self, s: AbstractSet[object]) -> bool: ...

diff --git a/stdlib/2and3/builtins.pyi b/stdlib/2and3/builtins.pyi
@@ -1077,8 +1077,8 @@ class set(MutableSet[_T], Generic[_T]):
     def __iand__(self, s: AbstractSet[object]) -> Set[_T]: ...
     def __or__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
     def __ior__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
-    def __sub__(self, s: AbstractSet[object]) -> Set[_T]: ...
-    def __isub__(self, s: AbstractSet[object]) -> Set[_T]: ...
+    def __sub__(self, s: AbstractSet[_T]) -> Set[_T]: ...
+    def __isub__(self, s: AbstractSet[_T]) -> Set[_T]: ...
     def __xor__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
     def __ixor__(self, s: AbstractSet[_S]) -> Set[Union[_T, _S]]: ...
     def __le__(self, s: AbstractSet[object]) -> bool: ...