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https://issues.apache.org/jira/browse/ARROW-3899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16703768#comment-16703768
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Uwe L. Korn commented on ARROW-3899:
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We currently have the parameter {{date_as_object}} on the conversion to Pandas.
This is set to false. Although I would like to have true as the default, this
would be a heavy breaking change. We should add a DeprecationWarning that we
will change that in the next release and then do it a release later.
> [Python] Table.to_pandas converts Arrow date32[day] to pandas datetime64[ns]
> ----------------------------------------------------------------------------
>
> Key: ARROW-3899
> URL: https://issues.apache.org/jira/browse/ARROW-3899
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Reporter: Wes McKinney
> Priority: Major
> Fix For: 0.13.0
>
>
> This issue was raised here:
> https://github.com/wesm/feather/issues/359
> I explored this minimally against Arrow master:
> https://gist.github.com/wesm/2ebe0ca2461d1ecfba6185777238ad1f
> While it's pretty memory-wasteful, it might be better to preserve the intent
> of the data type when converting to pandas data structures. It also allows
> the data to round trip successfully
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