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Posted to jira@arrow.apache.org by "A. Coady (Jira)" <ji...@apache.org> on 2022/12/10 21:44:00 UTC

[jira] [Created] (ARROW-18432) [Python] Array constructor doesn't support arrow scalars.

A. Coady created ARROW-18432:
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             Summary: [Python] Array constructor doesn't support arrow scalars.
                 Key: ARROW-18432
                 URL: https://issues.apache.org/jira/browse/ARROW-18432
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Python
    Affects Versions: 10.0.1
            Reporter: A. Coady


{code:python}
pa.array([pa.scalar(0)])
ArrowInvalid: Could not convert <pyarrow.Int64Scalar: 0> with type pyarrow.lib.Int64Scalar: did not recognize Python value type when inferring an Arrow data type

pa.array([pa.scalar(0)], 'int64')
ArrowInvalid: Could not convert <pyarrow.Int64Scalar: 0> with type pyarrow.lib.Int64Scalar: tried to convert to int64{code}
It seems odd that the array constructors don't recognize their own scalars.

In practice, a list of scalars has to be converted with `.as_py()` just to be converted back, and that also loses the type information.

 



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