diff --git a/doc/source/whatsnew/v2.2.1.rst b/doc/source/whatsnew/v2.2.1.rst index 1302648c3fc9a..19b7e3493f964 100644 --- a/doc/source/whatsnew/v2.2.1.rst +++ b/doc/source/whatsnew/v2.2.1.rst @@ -18,6 +18,7 @@ Fixed regressions - Fixed regression in :func:`merge_ordered` raising ``TypeError`` for ``fill_method="ffill"`` and ``how="left"`` (:issue:`57010`) - Fixed regression in :func:`wide_to_long` raising an ``AttributeError`` for string columns (:issue:`57066`) - Fixed regression in :meth:`DataFrame.loc` raising ``IndexError`` for non-unique, masked dtype indexes where result has more than 10,000 rows (:issue:`57027`) +- Fixed regression in :meth:`DataFrame.to_dict` with ``orient='list'`` and datetime or timedelta types returning integers (:issue:`54824`) - Fixed regression in :meth:`DataFrameGroupBy.idxmin`, :meth:`DataFrameGroupBy.idxmax`, :meth:`SeriesGroupBy.idxmin`, :meth:`SeriesGroupBy.idxmax` ignoring the ``skipna`` argument (:issue:`57040`) - Fixed regression in :meth:`DataFrameGroupBy.idxmin`, :meth:`DataFrameGroupBy.idxmax`, :meth:`SeriesGroupBy.idxmin`, :meth:`SeriesGroupBy.idxmax` where values containing the minimum or maximum value for the dtype could produce incorrect results (:issue:`57040`) - Fixed regression in :meth:`Index.join` raising ``TypeError`` when joining an empty index to a non-empty index containing mixed dtype values (:issue:`57048`) diff --git a/pandas/_libs/tslibs/tzconversion.pyx b/pandas/_libs/tslibs/tzconversion.pyx index 2c4f0cd14db13..e3facd3d9599b 100644 --- a/pandas/_libs/tslibs/tzconversion.pyx +++ b/pandas/_libs/tslibs/tzconversion.pyx @@ -607,7 +607,8 @@ cdef ndarray[int64_t] _get_dst_hours( ndarray[uint8_t, cast=True] mismatch ndarray[int64_t] delta, dst_hours ndarray[intp_t] switch_idxs, trans_idx, grp, a_idx, b_idx, one_diff - list trans_grp + # TODO: Can uncomment when numpy >=2 is the minimum + # tuple trans_grp intp_t switch_idx int64_t left, right diff --git a/pandas/core/methods/to_dict.py b/pandas/core/methods/to_dict.py index 7bd4851425c3b..accbd92a91ed6 100644 --- a/pandas/core/methods/to_dict.py +++ b/pandas/core/methods/to_dict.py @@ -171,13 +171,9 @@ def to_dict( return into_c( ( k, - list( - map( - maybe_box_native, v.to_numpy(na_value=box_na_values[i]).tolist() - ) - ) + list(map(maybe_box_native, v.to_numpy(na_value=box_na_values[i]))) if i in object_dtype_indices_as_set - else v.to_numpy().tolist(), + else list(map(maybe_box_native, v.to_numpy())), ) for i, (k, v) in enumerate(df.items()) ) diff --git a/pandas/tests/frame/methods/test_to_dict.py b/pandas/tests/frame/methods/test_to_dict.py index 61f0ad30b4519..570f85a4a31ee 100644 --- a/pandas/tests/frame/methods/test_to_dict.py +++ b/pandas/tests/frame/methods/test_to_dict.py @@ -12,8 +12,11 @@ NA, DataFrame, Index, + Interval, MultiIndex, + Period, Series, + Timedelta, Timestamp, ) import pandas._testing as tm @@ -519,3 +522,14 @@ def test_to_dict_pos_args_deprecation(self): ) with tm.assert_produces_warning(FutureWarning, match=msg): df.to_dict("records", {}) + + +@pytest.mark.parametrize( + "val", [Timestamp(2020, 1, 1), Timedelta(1), Period("2020"), Interval(1, 2)] +) +def test_to_dict_list_pd_scalars(val): + # GH 54824 + df = DataFrame({"a": [val]}) + result = df.to_dict(orient="list") + expected = {"a": [val]} + assert result == expected