pandas / 0.22.0 / generated / pandas.core.groupby.seriesgroupby.nunique.html /

pandas.core.groupby.SeriesGroupBy.nunique

SeriesGroupBy.nunique(dropna=True) [source]

Returns number of unique elements in the group

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https://pandas.pydata.org/pandas-docs/version/0.22.0/generated/pandas.core.groupby.SeriesGroupBy.nunique.html