add overload for itertuples with name None, resolves #854 (#915)

* add overload for itertuples with name None, resolves #854

* allow positional name

---------

Co-authored-by: Laurent Mutricy <[email protected]>

Author: mutricyl

pandas-stubs/core/frame.pyi

@@ -267,9 +267,14 @@ class DataFrame(NDFrame, OpsMixin):
     def style(self) -> Styler: ...
     def items(self) -> Iterable[tuple[Hashable, Series]]: ...
     def iterrows(self) -> Iterable[tuple[Hashable, Series]]: ...
+    @overload
     def itertuples(
-        self, index: _bool = ..., name: _str | None = ...
+        self, index: _bool = ..., name: _str = ...
     ) -> Iterable[_PandasNamedTuple]: ...
+    @overload
+    def itertuples(
+        self, index: _bool = ..., name: None = None
+    ) -> Iterable[tuple[Any, ...]]: ...
     def __len__(self) -> int: ...
     @overload
     def dot(self, other: DataFrame | ArrayLike) -> DataFrame: ...

tests/test_frame.py

@@ -471,9 +471,9 @@ def test_types_itertuples() -> None:
         _PandasNamedTuple,
     )
     check(
-        assert_type(df.itertuples(index=False, name=None), Iterable[_PandasNamedTuple]),
+        assert_type(df.itertuples(index=False, name=None), Iterable[tuple[Any, ...]]),
         Iterable,
-        _PandasNamedTuple,
+        object,
     )