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https://issues.apache.org/jira/browse/BEAM-12563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17475036#comment-17475036
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Brian Hulette commented on BEAM-12563:
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There's a minor issue preventing us from merging the PR until pandas 1.4.0 is
out.
> Implement swaplevel for Series and DataFrame
> --------------------------------------------
>
> Key: BEAM-12563
> URL: https://issues.apache.org/jira/browse/BEAM-12563
> Project: Beam
> Issue Type: Improvement
> Components: dsl-dataframe
> Reporter: Brian Hulette
> Assignee: Irwin Alejandro Rodirguez Ramirez
> Priority: P3
> Time Spent: 3h 50m
> Remaining Estimate: 0h
>
> Add an implementation of
> [swaplevel|https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.swaplevel.html]
> for DeferredDataFrame, DeferredSeries, and DeferredGroupBy. It should be
> fully unit tested with some combination of pandas_doctests_test.py and
> frames_test.py.
> https://github.com/apache/beam/pull/14274 is an example of a typical PR that
> adds new operations. See
> https://lists.apache.org/thread.html/r8ffe96d756054610dfdb4e849ffc6a741e826d15ba7e5bdeee1b4266%40%3Cdev.beam.apache.org%3E
> for background on the DataFrame API.
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