[Python] Accept pd.NA as missing value in array constructor #25486
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 typeReporter: Uwe Korn / @xhochy
Assignee: Wes McKinney / @wesm
Related issues:
- [C++/Python] Support necessary functionality to have an Arrow-string type in pandas (is depended upon by)
PRs and other links:
Note: This issue was originally created as ARROW-9407. Please see the migration documentation for further details.