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https://issues.apache.org/jira/browse/ARROW-972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16211953#comment-16211953
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ASF GitHub Bot commented on ARROW-972:
--------------------------------------

GitHub user pcmoritz opened a pull request:

    https://github.com/apache/arrow/pull/1216

    [WIP] ARROW-972: UnionArray in pyarrow

    This is taking a stab at exposing UnionArray to pyarrow. Tasks to be done:
    
    - [ ] Support UnionType::SPARSE
    - [ ] Add doc strings

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/pcmoritz/arrow pyarrow-union-array

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/arrow/pull/1216.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1216
    
----
commit 7f78e4f525c9e19538e7bf76c35d25763e695ccf
Author: Philipp Moritz <pcmor...@gmail.com>
Date:   2017-10-19T22:51:19Z

    Implement UnionArray in pyarrow

----


> [Python] Add test cases and basic APIs for UnionArray
> -----------------------------------------------------
>
>                 Key: ARROW-972
>                 URL: https://issues.apache.org/jira/browse/ARROW-972
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: Python
>    Affects Versions: 0.3.0
>            Reporter: Wes McKinney
>              Labels: pull-request-available
>             Fix For: 0.8.0
>
>
> While this is implemented in C++, there isn't any API exposure yet in Python



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