fix(comment): #1332 (comment)

Author: cmp0xff

pandas-stubs/core/series.pyi

@@ -265,6 +265,8 @@ _ListLike: TypeAlias = (
 )
 
 class Series(IndexOpsMixin[S1], NDFrame):
+    # Define __index__ because mypy thinks Series follows protocol `SupportsIndex` https://github.com/pandas-dev/pandas-stubs/pull/1332#discussion_r2285648790
+    __index__: ClassVar[None]
     __hash__: ClassVar[None]
 
     @overload

tests/series/arithmetic/test_mul.py

@@ -42,11 +42,10 @@ def test_mul_py_sequence() -> None:
     check(assert_type(left * f, pd.Series), pd.Series)
     check(assert_type(left * c, pd.Series), pd.Series)
 
-    # `mypy` thinks the return types are `list[_T]`
-    check(assert_type(b * left, pd.Series), pd.Series)  # type: ignore[assert-type]
-    check(assert_type(i * left, pd.Series), pd.Series)  # type: ignore[assert-type]
-    check(assert_type(f * left, pd.Series), pd.Series)  # type: ignore[assert-type]
-    check(assert_type(c * left, pd.Series), pd.Series)  # type: ignore[assert-type]
+    check(assert_type(b * left, pd.Series), pd.Series)
+    check(assert_type(i * left, pd.Series), pd.Series)
+    check(assert_type(f * left, pd.Series), pd.Series)
+    check(assert_type(c * left, pd.Series), pd.Series)
 
     check(assert_type(left.mul(b), pd.Series), pd.Series)
     check(assert_type(left.mul(i), pd.Series), pd.Series)