Count unique values per groups with Pandas

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Track title: Puzzle Game 5

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Chapters
00:00 Question
00:38 Accepted answer (Score 421)
01:27 Answer 2 (Score 345)
02:43 Answer 3 (Score 68)
02:58 Answer 4 (Score 17)
03:40 Thank you

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Full question
https://stackoverflow.com/questions/3830...

Accepted answer links:
[nunique]: http://pandas.pydata.org/pandas-docs/sta...
[strip]: http://pandas.pydata.org/pandas-docs/sta...
[Jon Clements]: https://stackoverflow.com/questions/3830...

Answer 2 links:
[Series.value_counts]: http://pandas.pydata.org/pandas-docs/sta...
[Series.nunique]: http://pandas.pydata.org/pandas-docs/sta...
[unique]: http://pandas.pydata.org/pandas-docs/sta...
[drop_duplicates]: http://pandas.pydata.org/pandas-docs/sta...

Answer 4 links:
[Jezrael's answer]: https://stackoverflow.com/questions/3830...

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Tags
#python #pandas #groupby #unique #pandasgroupby

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