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https://issues.apache.org/jira/browse/ARROW-13762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nic Crane updated ARROW-13762:
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Summary: [Python] Unable to cast `HalffloatArray` to `Float` or `Double`
(was: Unable to cast `HalffloatArray` to `Float` or `Double`)
> [Python] Unable to cast `HalffloatArray` to `Float` or `Double`
> ---------------------------------------------------------------
>
> Key: ARROW-13762
> URL: https://issues.apache.org/jira/browse/ARROW-13762
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 5.0.0, 5.0.1
> Reporter: Prem Sagar Gali
> Priority: Major
>
> I'm not able to cast the `float16` type to `float32`/`float64`, here is a
> repro:
> {code:java}
> >>> import pyarrow as pa
> >>> import numpy as np
> >>> pa.array(np.array([1, 2.0], dtype='float32')).cast(pa.float64())
> <pyarrow.lib.DoubleArray object at 0x7fa67cc56760>
> [
> 1,
> 2
> ]
> >>> pa.array(np.array([1, 2.0], dtype='float16')).cast(pa.float64())
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "pyarrow/array.pxi", line 816, in pyarrow.lib.Array.cast
> File
> "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.8/site-packages/pyarrow/compute.py",
> line 297, in cast
> return call_function("cast", [arr], options)
> File "pyarrow/_compute.pyx", line 527, in pyarrow._compute.call_function
> File "pyarrow/_compute.pyx", line 337, in pyarrow._compute.Function.call
> File "pyarrow/error.pxi", line 143, in
> pyarrow.lib.pyarrow_internal_check_status
> File "pyarrow/error.pxi", line 120, in pyarrow.lib.check_status
> pyarrow.lib.ArrowNotImplementedError: Unsupported cast from halffloat to
> double using function cast_double
> >>>
> {code}
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