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Posted to issues@arrow.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/03/03 00:24:00 UTC
[jira] [Updated] (ARROW-2141) [Python] Conversion from Numpy object
array to varsize binary unimplemented
[ https://issues.apache.org/jira/browse/ARROW-2141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated ARROW-2141:
----------------------------------
Labels: pull-request-available (was: )
> [Python] Conversion from Numpy object array to varsize binary unimplemented
> ---------------------------------------------------------------------------
>
> Key: ARROW-2141
> URL: https://issues.apache.org/jira/browse/ARROW-2141
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Affects Versions: 0.8.0
> Reporter: Antoine Pitrou
> Assignee: Bryan Cutler
> Priority: Major
> Labels: pull-request-available
>
> {code:python}
> >>> arr = np.array([b'xx'], dtype=np.object)
> >>> pa.array(arr, type=pa.binary(2))
> <pyarrow.lib.FixedSizeBinaryArray object at 0x7fe1ecaefa98>
> [
> b'xx'
> ]
> >>> pa.array(arr, type=pa.binary())
> Traceback (most recent call last):
> File "<ipython-input-12-e40948b94b33>", line 1, in <module>
> pa.array(arr, type=pa.binary())
> File "array.pxi", line 177, in pyarrow.lib.array
> File "error.pxi", line 77, in pyarrow.lib.check_status
> File "error.pxi", line 85, in pyarrow.lib.check_status
> ArrowNotImplementedError: /home/antoine/arrow/cpp/src/arrow/python/numpy_to_arrow.cc:1585 code: converter.Convert()
> /home/antoine/arrow/cpp/src/arrow/python/numpy_to_arrow.cc:1098 code: compute::Cast(&context, *arr, type_, options, &casted)
> /home/antoine/arrow/cpp/src/arrow/compute/kernels/cast.cc:1022 code: Cast(ctx, Datum(array.data()), out_type, options, &datum_out)
> /home/antoine/arrow/cpp/src/arrow/compute/kernels/cast.cc:1009 code: GetCastFunction(*value.type(), out_type, options, &func)
> No cast implemented from binary to binary
> {code}
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