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https://issues.apache.org/jira/browse/ARROW-1893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16280966#comment-16280966
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ASF GitHub Bot commented on ARROW-1893:
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wesm opened a new pull request #1398: ARROW-1893: [Python] Convert memoryview
to bytes when loading from pickle in Python 2.7
URL: https://github.com/apache/arrow/pull/1398
It seems somewhere in the 2.7.x series, Python 2.7 acquired the ability to
load from memoryview. To be on the safe side, we'll always convert memoryview
to bytes. Here's a related workaround from IPython:
https://github.com/ipython/ipython_genutils/blob/master/ipython_genutils/py3compat.py#L153
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> [Python] test_primitive_serialization fails on Python 2.7.3
> -----------------------------------------------------------
>
> Key: ARROW-1893
> URL: https://issues.apache.org/jira/browse/ARROW-1893
> Project: Apache Arrow
> Issue Type: Bug
> Reporter: Uwe L. Korn
> Assignee: Wes McKinney
> Labels: pull-request-available
> Fix For: 0.8.0
>
>
> {{test_primitive_serialization}} fails on with the following error: Python
> 2.7.3
> {code}
> str = <memory at 0x44dff28>
>
> def loads(str):
> > file = StringIO(str)
> E TypeError: expected read buffer, memoryview found
> {code}
> More context:
> {code}
> def test_primitive_serialization(large_memory_map):
> with pa.memory_map(large_memory_map, mode="r+") as mmap:
> for obj in PRIMITIVE_OBJECTS:
> serialization_roundtrip(obj, mmap)
> > serialization_roundtrip(obj, mmap,
> > pa.pandas_serialization_context)
> {code}
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