[ARROW-1585] serialize_pandas round trip fails on integer columns

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Fix Version/s: 0.8.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17598
• Assignee: Phillip Cloud
• Reporter: Tom Augspurger
• Created: 20/Sep/17 22:04
• Updated: 11/Jan/23 07:15
• Resolved: 07/Oct/17 20:28

Description

This roundtrip fails, since the Integer column isn't converted to a string after deserializing

In [1]: import pandas as pd
im
In [2]: import pyarrow as pa

In [3]: pa.deserialize_pandas(pa.serialize_pandas(pd.DataFrame({"0": [1, 2]}))).columns
Out[3]: Index(['0'], dtype='object')

That should be an {{ Int64Index([0]) }} for the columns.

Issue Links

• links to: GitHub Pull Request #1161