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https://issues.apache.org/jira/browse/BEAM-12444?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brian Hulette updated BEAM-12444:
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Affects Version/s: 2.31.0
> GroupBy.apply on a series grouped by a callable fails
> -----------------------------------------------------
>
> Key: BEAM-12444
> URL: https://issues.apache.org/jira/browse/BEAM-12444
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Affects Versions: 2.29.0, 2.30.0, 2.31.0
> Reporter: Brian Hulette
> Assignee: Brian Hulette
> Priority: P2
> Labels: dataframe-api
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> {code}
> df.foo.groupby(lambda x: x % 3).apply(...)
> {code}
> This example fails because it tries to call set_index on a Series. It fails
> at construction time, not at execution time.
> To workaround users can call groupby on a single column dataframe instead,
> e.g. {{df[['foo']].groupby...}}
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