polars.Series.is_unique

Series.is_unique() → Series

Get mask of all unique values.

Returns:

Series

Series of data type Boolean.

Examples

>>> s = pl.Series("a", [1, 2, 2, 3])
>>> s.is_unique()
shape: (4,)
Series: 'a' [bool]
[
        true
        false
        false
        true
]