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BUG: checking for value type when parquet is partitioned #54074

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Merged
merged 6 commits into from
Jul 13, 2023
Merged

BUG: checking for value type when parquet is partitioned #54074

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dd630ff
checking for value type when parquet is partitioned
SanjithChockan Jul 11, 2023
d754d1a
whatsnew formatting
SanjithChockan Jul 12, 2023
465c9d7
added whatsnew
SanjithChockan Jul 12, 2023
5423fc4
removed aliasing and skip_if_no_arrow decorator
SanjithChockan Jul 13, 2023
e184bc6
added unit test for valid pyarrow array of dictionary with string val…
SanjithChockan Jul 13, 2023
9bdb611
updated whatsnew with suggested changes
SanjithChockan Jul 13, 2023
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5 changes: 4 additions & 1 deletion pandas/core/arrays/string_arrow.py
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Original file line number Diff line number Diff line change
Expand Up @@ -118,7 +118,10 @@ def __init__(self, values) -> None:
super().__init__(values)
self._dtype = StringDtype(storage="pyarrow")

if not pa.types.is_string(self._pa_array.type):
if not pa.types.is_string(self._pa_array.type) and not (
pa.types.is_dictionary(self._pa_array.type)
and pa.types.is_string(self._pa_array.type.value_type)
):
raise ValueError(
"ArrowStringArray requires a PyArrow (chunked) array of string type"
)
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1 change: 0 additions & 1 deletion pandas/io/parquet.py
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Expand Up @@ -183,7 +183,6 @@ def write(
from_pandas_kwargs["preserve_index"] = index

table = self.api.Table.from_pandas(df, **from_pandas_kwargs)

path_or_handle, handles, filesystem = _get_path_or_handle(
path,
filesystem,
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