type dtype too

Author: MarcoGorelli

pandas-stubs/core/indexes/base.pyi

@@ -50,6 +50,7 @@ from pandas._typing import (
     ArrayLike,
     AxesData,
     DropKeep,
+    Dtype,
     DtypeArg,
     DTypeLike,
     DtypeObj,
@@ -252,7 +253,7 @@ class Index(IndexOpsMixin[S1]):
         cls,
         data: AxesData,
         *,
-        dtype=...,
+        dtype: Dtype = ...,
         copy: bool = ...,
         name: Hashable = ...,
         tupleize_cols: bool = ...,