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  1. Apache Arrow
  2. ARROW-18432

[Python] Array constructor doesn't support arrow scalars.

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Details

    • Improvement
    • Status: Closed
    • Minor
    • Resolution: Duplicate
    • 10.0.1
    • None
    • Python
    • None

    Description

      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

      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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          duplicates

          Improvement - An improvement or enhancement to an existing feature or task. ARROW-5295 [Python] accept pyarrow values / scalars in constructor functions ?

          • Major - Major loss of function.
          • Open

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              Unassigned Unassigned
              coady A. Coady
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                Updated:
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