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  * [ __ ](../../../index.html)
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  * __
  * [ List ](../list.html)
  * polars.Serie... 

#  polars.Series.list.unique  #

Series.list.  unique  (  _ *  _ , _ maintain_order  :  [ bool
](https://docs.python.org/3/library/functions.html#bool "\(in Python v3.12\)")
=  False  _ )  →  Series  [ [source]  ](https://github.com/pola-
rs/polars/blob/py-0.20.23/py-polars/polars/series/list.py#L338-L357) #

    

Get the unique/distinct values in the list.

Parameters  :

    

**maintain_order**

    

Maintain order of data. This requires more work.

Examples

    
    
    >>> s = pl.Series("a", [[1, 1, 2], [2, 3, 3]])
    >>> s.list.unique()
    shape: (2,)
    Series: 'a' [list[i64]]
    [
        [1, 2]
        [2, 3]
    ]
    

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  * ` Series.list.unique()  `

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