dask_expr._groupby.SeriesGroupBy.nunique

dask_expr._groupby.SeriesGroupBy.nunique

SeriesGroupBy.nunique(split_every=None, split_out=True, shuffle_method=None)[source]

Examples

>>> import pandas as pd
>>> import dask.dataframe as dd
>>> d = {'col1': [1, 2, 3, 4], 'col2': [5, 6, 7, 8]}
>>> df = pd.DataFrame(data=d)
>>> ddf = dd.from_pandas(df, 2)
>>> ddf.groupby(['col1']).col2.nunique().compute()

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