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Request For Help: unexplained ArrowInvalid overflow #61776

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Request For Help: unexplained ArrowInvalid overflow #61776

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11 changes: 11 additions & 0 deletions pandas/core/arrays/arrow/array.py
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Original file line number Diff line number Diff line change
Expand Up @@ -500,8 +500,19 @@ def _box_pa_array(
value = to_timedelta(value, unit=pa_type.unit).as_unit(pa_type.unit)
value = value.to_numpy()

alt = None
if pa_type is not None and pa.types.is_timestamp(pa_type):
# Use to_datetime to handle NaNs, disallow Decimal("NaN")
from pandas.core.tools.datetimes import to_datetime

new_value = to_datetime(value, unit=pa_type.unit).as_unit(pa_type.unit)
alt = pa.array(np.asarray(new_value), type=pa_type, from_pandas=True)

try:
pa_array = pa.array(value, type=pa_type, from_pandas=True)
if alt is not None:
assert alt == pa_array
pa_array = alt
except (pa.ArrowInvalid, pa.ArrowTypeError):
# GH50430: let pyarrow infer type, then cast
pa_array = pa.array(value, from_pandas=True)
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