pyspark.pandas.Series.unique¶
-
Series.
unique
() → pyspark.pandas.series.Series[source]¶ Return unique values of Series object.
Uniques are returned in order of appearance. Hash table-based unique, therefore does NOT sort.
Note
This method returns newly created Series whereas pandas returns the unique values as a NumPy array.
- Returns
- Returns the unique values as a Series.
See also
Examples
>>> psser = ps.Series([2, 1, 3, 3], name='A') >>> psser.unique().sort_values() 1 1 0 2 2 3 Name: A, dtype: int64
>>> ps.Series([pd.Timestamp('2016-01-01') for _ in range(3)]).unique() 0 2016-01-01 dtype: datetime64[ns]
>>> psser.name = ('x', 'a') >>> psser.unique().sort_values() 1 1 0 2 2 3 Name: (x, a), dtype: int64