pandas.DataFrame.nunique |
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Count number of distinct elements in specified axis. Return Series with number of distinct elements. Can ignore NaN values. Parameters: axis{0 or ‘index’, 1 or ‘columns’}, default 0The axis to use. 0 or ‘index’ for row-wise, 1 or ‘columns’ for column-wise. dropnabool, default TrueDon’t include NaN in the counts. Returns: SeriesSee also Series.nuniqueMethod nunique for Series. DataFrame.countCount non-NA cells for each column or row. Examples >>> df = pd.DataFrame({'A': [4, 5, 6], 'B': [4, 1, 1]}) >>> df.nunique() A 3 B 2 dtype: int64 >>> df.nunique(axis=1) 0 1 1 2 2 2 dtype: int64 |
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