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[ENH] Method for adding functionality to pandas groupby
PR Description
Please describe the changes proposed in the pull request:
- Create function that allows creation of methods on pandas GroupBy objects, similar to the accessors/methods we have for pd.Series/pd.DataFrame
- Extend
jn.selectto pandas GroupBy object -df.groupby('a').select('col_*')
This PR resolves #587 .
Please tag maintainers to review.
- @ericmjl
🚀 Deployed on https://deploy-preview-1462--pyjanitor.netlify.app
@ericmjl can I get your review again for #1460