[ARROW-1586] [PYTHON] serialize_pandas roundtrip loses columns name

• 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/17599
• Assignee: Phillip Cloud
• Reporter: Tom Augspurger
• Created: 20/Sep/17 22:17
• Updated: 11/Jan/23 07:15
• Resolved: 07/Oct/17 20:29

Description

The serialize / deserialize roundtrip loses {{ df.columns.name }}

In [1]: import pandas as pd

In [2]: import pyarrow as pa

In [3]: df = pd.DataFrame([[1, 2]], columns=pd.Index(['a', 'b'], name='col_name'))

In [4]: df.columns.name
Out[4]: 'col_name'

In [5]: pa.deserialize_pandas(pa.serialize_pandas(df)).columns.name

Is this in scope for pyarrow? I suspect it would require an update to the pandas section of the Schema metadata.

Issue Links

• links to: GitHub Pull Request #1161