TYP fixup overloads for reset_index (#40200)

* fixup overloads for reset_index

* another overload

* add defaults for bool case

* add types back to function signature

Author: MarcoGorelli

pandas/core/frame.py

@@ -5145,9 +5145,7 @@ def set_index(
             return frame
 
     @overload
-    # https://github.com/python/mypy/issues/6580
-    # Overloaded function signatures 1 and 2 overlap with incompatible return types
-    def reset_index(  # type: ignore[misc]
+    def reset_index(
         self,
         level: Optional[Union[Hashable, Sequence[Hashable]]] = ...,
         drop: bool = ...,
@@ -5157,15 +5155,58 @@ def reset_index(  # type: ignore[misc]
     ) -> DataFrame:
         ...
 
+    @overload
+    def reset_index(
+        self,
+        level: Optional[Union[Hashable, Sequence[Hashable]]],
+        drop: bool,
+        inplace: Literal[True],
+        col_level: Hashable = ...,
+        col_fill: Hashable = ...,
+    ) -> None:
+        ...
+
+    @overload
+    def reset_index(
+        self,
+        *,
+        drop: bool,
+        inplace: Literal[True],
+        col_level: Hashable = ...,
+        col_fill: Hashable = ...,
+    ) -> None:
+        ...
+
+    @overload
+    def reset_index(
+        self,
+        *,
+        level: Optional[Union[Hashable, Sequence[Hashable]]],
+        inplace: Literal[True],
+        col_level: Hashable = ...,
+        col_fill: Hashable = ...,
+    ) -> None:
+        ...
+
+    @overload
+    def reset_index(
+        self,
+        *,
+        inplace: Literal[True],
+        col_level: Hashable = ...,
+        col_fill: Hashable = ...,
+    ) -> None:
+        ...
+
     @overload
     def reset_index(
         self,
         level: Optional[Union[Hashable, Sequence[Hashable]]] = ...,
         drop: bool = ...,
-        inplace: Literal[True] = ...,
+        inplace: bool = ...,
         col_level: Hashable = ...,
         col_fill: Hashable = ...,
-    ) -> None:
+    ) -> Optional[DataFrame]:
         ...
 
     def reset_index(