May 19, 2025 · May 17, 2025 · May 18, 2025 · May 18, 2025
diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
 - Bug in ``Series.list`` methods not preserving the original name. (:issue:`60522`)
 - Bug in printing a :class:`DataFrame` with a :class:`DataFrame` stored in :attr:`DataFrame.attrs` raised a ``ValueError`` (:issue:`60455`)
 - Bug in printing a :class:`Series` with a :class:`DataFrame` stored in :attr:`Series.attrs` raised a ``ValueError`` (:issue:`60568`)
 - Fixed bug where the :class:`DataFrame` constructor misclassified array-like objects with a ``.name`` attribute as :class:`Series` or :class:`Index` (:issue:`61443`)
 - Fixed regression in :meth:`DataFrame.from_records` not initializing subclasses properly (:issue:`57008`)

 .. ***DO NOT USE THIS SECTION***
diff --git a/pandas/core/frame.py b/pandas/core/frame.py
    BaseMaskedDtype,
    ExtensionDtype,
 )
 from pandas.core.dtypes.generic import (
    ABCIndex,
    ABCSeries,
 )
 from pandas.core.dtypes.missing import (
    isna,
    notna,
                    dtype,
                    copy,
                )
            elifgetattr(data,"name", None) is not None:
            elifisinstance(data,(ABCSeries, ABCIndex)) and data.name is not None:
                # i.e. Series/Index with non-None name
                mgr = dict_to_mgr(
                    # error: Item "ndarray" of "Union[ndarray, Series, Index]" has no
                    # attribute "name"
                    {data.name: data},  # type: ignore[union-attr]
                    {data.name: data},
                    index,
                    columns,
                    dtype=dtype,
diff --git a/pandas/tests/frame/test_constructors.py b/pandas/tests/frame/test_constructors.py
        )
        tm.assert_frame_equal(result, expected)

    def test_dataframe_from_array_like_with_name_attribute(self):
        # GH#61443
        class DummyArray(np.ndarray):
            def __new__(cls, input_array):
                obj = np.asarray(input_array).view(cls)
                obj.name = "foo"
                return obj

        dummy = DummyArray(np.eye(3))
        df = DataFrame(dummy)
        expected = DataFrame(np.eye(3))
        tm.assert_frame_equal(df, expected)


 class TestDataFrameConstructorIndexInference:
    def test_frame_from_dict_of_series_overlapping_monthly_period_indexes(self):
Original file line number	Diff line number	Diff line change
Expand Up		@@ -904,6 +904,7 @@ Other
		- Bug in ``Series.list`` methods not preserving the original name. (:issue:`60522`)
		- Bug in printing a :class:`DataFrame` with a :class:`DataFrame` stored in :attr:`DataFrame.attrs` raised a ``ValueError`` (:issue:`60455`)
		- Bug in printing a :class:`Series` with a :class:`DataFrame` stored in :attr:`Series.attrs` raised a ``ValueError`` (:issue:`60568`)
		- Fixed bug where the :class:`DataFrame` constructor misclassified array-like objects with a ``.name`` attribute as :class:`Series` or :class:`Index` (:issue:`61443`)
		- Fixed regression in :meth:`DataFrame.from_records` not initializing subclasses properly (:issue:`57008`)

		.. *DO NOT USE THIS SECTION*
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -112,6 +112,10 @@
		BaseMaskedDtype,
		ExtensionDtype,
		)
		from pandas.core.dtypes.generic import (
		ABCIndex,
		ABCSeries,
		)
		from pandas.core.dtypes.missing import (
		isna,
		notna,
Expand DownExpand Up		@@ -795,12 +799,12 @@ def __init__(
		dtype,
		copy,
		)
		elifgetattr(data,"name", None) is not None:
		elifisinstance(data,(ABCSeries, ABCIndex)) and data.name is not None:
		# i.e. Series/Index with non-None name
		mgr = dict_to_mgr(
		# error: Item "ndarray" of "Union[ndarray, Series, Index]" has no
		# attribute "name"
		{data.name: data}, # type: ignore[union-attr]
		{data.name: data},
		index,
		columns,
		dtype=dtype,
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -2780,6 +2780,19 @@ def test_construction_nan_value_timedelta64_dtype(self):
		)
		tm.assert_frame_equal(result, expected)

		def test_dataframe_from_array_like_with_name_attribute(self):
		# GH#61443
		class DummyArray(np.ndarray):
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		def __new__(cls, input_array):
		obj = np.asarray(input_array).view(cls)
		obj.name = "foo"
		return obj

		dummy = DummyArray(np.eye(3))
		df = DataFrame(dummy)
		expected = DataFrame(np.eye(3))
		tm.assert_frame_equal(df, expected)


		class TestDataFrameConstructorIndexInference:
		def test_frame_from_dict_of_series_overlapping_monthly_period_indexes(self):
Expand Down