polars.Series.arr.unique#

Series.arr.unique(*, maintain_order: bool = False) → Series[source]#

Get the unique/distinct values in the array.

Parameters:

maintain_order: Maintain order of data. This requires more work.

Returns:

Series: Series of data type List.

Examples

>>> s = pl.Series([[1, 1, 2], [3, 4, 5]], dtype=pl.Array(pl.Int64, 3))
>>> s.arr.unique()
shape: (2,)
Series: '' [list[i64]]
[
    [1, 2]
    [3, 4, 5]
]