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https://issues.apache.org/jira/browse/ARROW-2129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360147#comment-16360147
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ASF GitHub Bot commented on ARROW-2129:
---------------------------------------
xhochy commented on a change in pull request #1588: ARROW-2129: [Python] Handle
conversion of empty tables to Pandas
URL: https://github.com/apache/arrow/pull/1588#discussion_r167451896
##########
File path: python/pyarrow/tests/test_convert_pandas.py
##########
@@ -1322,6 +1322,12 @@ def test_table_batch_empty_dataframe(self):
_check_pandas_roundtrip(df2, preserve_index=True)
_check_pandas_roundtrip(df2, as_batch=True, preserve_index=True)
+ def test_convert_empty_table(self):
+ arr = pa.array([], type=pa.int64())
+ npt.assert_array_equal(arr.to_pandas(), np.array([]))
+ arr = pa.array([], type=pa.string())
+ npt.assert_array_equal(arr.to_pandas(), np.array([]))
Review comment:
I skipped adding the `dtype` here as `assert_array_equal` seems to ignore it
anyways. I can add it if it's better for clarification.
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> [Python] Segmentation fault on conversion of empty array to Pandas
> ------------------------------------------------------------------
>
> Key: ARROW-2129
> URL: https://issues.apache.org/jira/browse/ARROW-2129
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.8.0
> Reporter: Uwe L. Korn
> Assignee: Uwe L. Korn
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.9.0
>
>
> Converting an empty {{pyarrow.Array}} to a Pandas series causes a
> segmentation fault.
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