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https://issues.apache.org/jira/browse/ARROW-2719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16932516#comment-16932516
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Antoine Pitrou commented on ARROW-2719:
---------------------------------------
This has been fixed in the meantime:
{code:python}
>>> sch = pa.schema([('ints', pa.int16()), ('strs', pa.string())])
>>>
>>>
>>> hash(sch)
>>>
>>>
988864331374776575
>>> s = {sch}
>>>
>>>
>>> sch in s
>>>
>>>
True
>>> pa.schema([('ints', pa.int16()), ('strs', pa.string())]) in s
>>>
>>>
True
>>> pa.schema([('ints', pa.int32()), ('strs', pa.string())]) in s
>>>
>>>
False
{code}
> [Python/C++] ArrowSchema not hashable
> -------------------------------------
>
> Key: ARROW-2719
> URL: https://issues.apache.org/jira/browse/ARROW-2719
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Python
> Reporter: Florian Jetter
> Priority: Minor
> Labels: beginner
>
> The arrow schema is immutable and should provide a way of hashing itself.
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