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BUG: ArrowDtype raising for fixed size list #55000

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merged 3 commits into from Sep 5, 2023
Merged

BUG: ArrowDtype raising for fixed size list #55000

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a5edc9b
BUG: ArrowDtype raising for fixed size list
phofl Sep 4, 2023
a21c360
Update v2.1.1.rst
phofl Sep 4, 2023
de3ef44
Update test_arrow.py
phofl Sep 4, 2023
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1 change: 1 addition & 0 deletions doc/source/whatsnew/v2.1.1.rst
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Expand Up @@ -29,6 +29,7 @@ Fixed regressions

Bug fixes
~~~~~~~~~
- Fixed bug for :class:`ArrowDtype` raising ``NotImplementedError`` for fixed-size list (:issue:`55000`)
- Fixed bug in :meth:`DataFrame.stack` with ``future_stack=True`` and columns a non-:class:`MultiIndex` consisting of tuples (:issue:`54948`)

.. ---------------------------------------------------------------------------
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2 changes: 2 additions & 0 deletions pandas/core/dtypes/dtypes.py
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Expand Up @@ -2148,6 +2148,8 @@ def type(self):
return CategoricalDtypeType
elif pa.types.is_list(pa_type) or pa.types.is_large_list(pa_type):
return list
elif pa.types.is_fixed_size_list(pa_type):
return list
elif pa.types.is_map(pa_type):
return list
elif pa.types.is_struct(pa_type):
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9 changes: 9 additions & 0 deletions pandas/tests/extension/test_arrow.py
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Expand Up @@ -2992,6 +2992,15 @@ def test_groupby_count_return_arrow_dtype(data_missing):
tm.assert_frame_equal(result, expected)


def test_fixed_size_list():
# GH#55000
ser = pd.Series(
[[1, 2], [3, 4]], dtype=ArrowDtype(pa.list_(pa.int64(), list_size=2))
)
result = ser.dtype.type
assert result == list


def test_arrowextensiondtype_dataframe_repr():
# GH 54062
df = pd.DataFrame(
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