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Posted to issues@arrow.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/09/05 22:06:00 UTC

[jira] [Updated] (ARROW-6369) [Python] Support list-of-boolean in Array.to_pandas conversion

     [ https://issues.apache.org/jira/browse/ARROW-6369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-6369:
----------------------------------
    Labels: pull-request-available  (was: )

> [Python] Support list-of-boolean in Array.to_pandas conversion
> --------------------------------------------------------------
>
>                 Key: ARROW-6369
>                 URL: https://issues.apache.org/jira/browse/ARROW-6369
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: Wes McKinney
>            Assignee: Wes McKinney
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.15.0
>
>
> See
> {code}
> In [4]: paste                                                                                                                                                                                  
> a = pa.array(np.array([[True, False], [True, True, True]]))
> ## -- End pasted text --
> In [5]: a                                                                                                                                                                                      
> Out[5]: 
> <pyarrow.lib.ListArray object at 0x7fc187d3fa40>
> [
>   [
>     true,
>     false
>   ],
>   [
>     true,
>     true,
>     true
>   ]
> ]
> In [6]: a.to_pandas()                                                                                                                                                                          
> ---------------------------------------------------------------------------
> ArrowNotImplementedError                  Traceback (most recent call last)
> <ipython-input-6-08d835d60bd1> in <module>
> ----> 1 a.to_pandas()
> ~/code/arrow/python/pyarrow/array.pxi in pyarrow.lib._PandasConvertible.to_pandas()
>     439             deduplicate_objects=deduplicate_objects)
>     440 
> --> 441         return self._to_pandas(options, categories=categories,
>     442                                ignore_metadata=ignore_metadata)
>     443 
> ~/code/arrow/python/pyarrow/array.pxi in pyarrow.lib.Array._to_pandas()
>     815 
>     816         with nogil:
> --> 817             check_status(ConvertArrayToPandas(c_options, self.sp_array,
>     818                                               self, &out))
>     819         return wrap_array_output(out)
> ~/code/arrow/python/pyarrow/error.pxi in pyarrow.lib.check_status()
>      84             raise ArrowKeyError(message)
>      85         elif status.IsNotImplemented():
> ---> 86             raise ArrowNotImplementedError(message)
>      87         elif status.IsTypeError():
>      88             raise ArrowTypeError(message)
> ArrowNotImplementedError: Not implemented type for lists: bool
> In ../src/arrow/python/arrow_to_pandas.cc, line 1910, code: VisitTypeInline(*data_->type(), this)
> {code}
> as reported in https://github.com/apache/arrow/issues/5203



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