Jesper Jaxing created ARROW-11416:
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Summary: [Python] table.to_pandas converts int32 to float64 if
column is None
Key: ARROW-11416
URL: https://issues.apache.org/jira/browse/ARROW-11416
Project: Apache Arrow
Issue Type: Bug
Reporter: Jesper Jaxing
table.to_pandas converts int32 to float64 if column is None.
To recreate:
import pyarrow as pa
schema = pa.schema([pa.field('a', pa.int32())])
a = [None, None, None]
array = pa.array(a, type=pa.int32())
table = pa.Table.from_arrays([array], schema=schema)
df = table.to_pandas()
df.dtypes
>> a float64
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