Matthew Roeschke created ARROW-16645:
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             Summary: Allow pa.array/pa.chunked_array to infer pa.NA when in a 
non pyarrow container
                 Key: ARROW-16645
                 URL: https://issues.apache.org/jira/browse/ARROW-16645
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Python
    Affects Versions: 7.0.0
            Reporter: Matthew Roeschke


Example:

 

 
{code:java}
In [15]: import pyarrow as pa

In [16]: pa.array([1, pa.NA])
ArrowInvalid: Could not convert <pyarrow.NullScalar: None> with type 
pyarrow.lib.NullScalar: did not recognize Python value type when inferring an 
Arrow data type{code}
 

I would be great if this could be equivalent to
{code:java}
In [17]: pa.array([1, pa.NA], mask=[False, True])
Out[17]:
<pyarrow.lib.Int64Array object at 0x7fe49c172b80>
[
  1,
  null
]


In [18]: pa.__version__
Out[18]: '7.0.0'{code}
 

 

 



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