pandas.Series.nunique¶
-
Series.
nunique
(self, dropna=True)[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.
Returns: - 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
>>> s.nunique() 4