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BUG: setitem with Series[pyarrow] values #62465

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Merged
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Oct 5, 2025
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Merged

BUG: setitem with Series[pyarrow] values #62465

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7619093
BUG: setitem with Series[pyarrow] values
jbrockmendel Sep 26, 2025
6e3053d
Merge branch 'main' into woops
jbrockmendel Sep 29, 2025
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1 change: 1 addition & 0 deletions pandas/core/arrays/arrow/array.py
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Original file line number Diff line number Diff line change
Expand Up @@ -569,6 +569,7 @@ def _box_pa_array(
-------
pa.Array or pa.ChunkedArray
"""
value = extract_array(value, extract_numpy=True)
if isinstance(value, cls):
pa_array = value._pa_array
elif isinstance(value, (pa.Array, pa.ChunkedArray)):
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13 changes: 13 additions & 0 deletions pandas/tests/indexing/test_iloc.py
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Expand Up @@ -8,6 +8,7 @@

from pandas.compat import pa_version_under16p0
from pandas.errors import IndexingError
import pandas.util._test_decorators as td

from pandas import (
NA,
Expand Down Expand Up @@ -1535,3 +1536,15 @@ def test_iloc_arrow_extension_array(self):
expected = df.iloc[:, df["c"]]
result = df_arrow.iloc[:, df_arrow["c"]]
tm.assert_frame_equal(result, expected, check_dtype=False)

@td.skip_if_no("pyarrow")
def test_setitem_pyarrow_int_series(self):
# GH#62462
ser = Series([1, 2, 3], dtype="int64[pyarrow]")
idx = Index([0, 1])
vals = Series([7, 8], dtype="int64[pyarrow]")

ser.iloc[idx] = vals

expected = Series([7, 8, 3], dtype="int64[pyarrow]")
tm.assert_series_equal(ser, expected)
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