modin.pandas.Index.nunique¶

Index.nunique(dropna: bool = True) → int[source]¶

Return number of unique elements in the object.

Excludes NA values by default.

Parameters:

dropna (bool, default True) – Don’t include NaN in the count.

Return type:

int

See also

DataFrame.nunique

Method nunique for DataFrame.

Series.count

Count non-NA/null observations in the Series.

Examples

>>> s = pd.Series([1, 3, 5, 7, 7])
>>> s
0    1
1    3
2    5
3    7
4    7
dtype: int64

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>>> s.nunique()  
4

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