pandas.core.window.expanding.Expanding.nunique#

Expanding.nunique(numeric_only=False)[source]#

Calculate the expanding nunique.

Added in version 3.0.0.

Parameters:

numeric_onlybool, default False

Include only float, int, boolean columns.

Added in version 1.5.0.

Returns:

Series or DataFrame

Return type is the same as the original object with np.float64 dtype.

See also

Series.expanding

Calling expanding with Series data.

DataFrame.expanding

Calling expanding with DataFrames.

Series.nunique

Aggregating nunique for Series.

DataFrame.nunique

Aggregating nunique for DataFrame.

Examples

>>> s = pd.Series([1, 4, 2, 3, 5, 3])
>>> s.expanding().nunique()
0    1.0
1    2.0
2    3.0
3    4.0
4    5.0
5    5.0
dtype: float64