[ARROW-9407] [Python] Accept pd.NA as missing value in array constructor

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/25486
• Assignee: Wes McKinney
• Reporter: Uwe Korn
• Created: 10/Jul/20 18:43
• Updated: 11/Jan/23 08:06
• Resolved: 11/Jul/20 20:33

Description

Currently we don't support using pandas.NA at all:

In [1]: import pyarrow as pa

In [2]: import pandas as pd

In [3]: pa.array([pd.NA, "A"])
---------------------------------------------------------------------------
ArrowInvalid                              Traceback (most recent call last)
<ipython-input-3-77e774fa8521> in <module>
----> 1 pa.array([pd.NA, "A"])

~/miniconda3/envs/fletcher/lib/python3.8/site-packages/pyarrow/array.pxi in pyarrow.lib.array()

~/miniconda3/envs/fletcher/lib/python3.8/site-packages/pyarrow/array.pxi in pyarrow.lib._sequence_to_array()

~/miniconda3/envs/fletcher/lib/python3.8/site-packages/pyarrow/error.pxi in pyarrow.lib.check_status()

ArrowInvalid: Could not convert <NA> with type NAType: did not recognize Python value type when inferring an Arrow data type

Issue Links

• is depended upon by: ARROW-9401 [C++/Python] Support necessary functionality to have an Arrow-string type in pandas
• links to: GitHub Pull Request #7714