STYLE: Inconsistent namespace - groupby (#39992)
- [ ] closes #xxxx
- [ ] tests added / passed
- [X] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them
- [ ] whatsnew entry

Nice, thanks @alexprincel ! I'll merge this and the other one you opened - shall we leave the other folder to other new contributors? > Nice, thanks @alexprincel ! I'll merge this and the other one you opened - shall we leave the other folder to other new contributors?

Yes, of course. I'll try to pick another issue or enhancement that I could tackle.