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

#  polars.Series.list.shift  #

Series.list.  shift  (  _ n  :  [ int  ](https://docs.python.org/3/library/functions.html#int "\(in Python v3.12\)") |  IntoExprColumn  =  1  _ )  →  Series  [ [source]  ](https://github.com/pola-rs/polars/blob/py-0.20.23/py-polars/polars/series/list.py#L675-L713) # 
    

Shift list values by the given number of indices.

Parameters  :

    

**n**

    

Number of indices to shift forward. If a negative value is passed, values are
shifted in the opposite direction instead.

Notes

This method is similar to the ` LAG  ` operation in SQL when the value for ` n
` is positive. With a negative value for ` n  ` , it is similar to ` LEAD  ` .

Examples

By default, list values are shifted forward by one index.

    
    
    >>> s = pl.Series([[1, 2, 3], [4, 5]])
    >>> s.list.shift()
    shape: (2,)
    Series: '' [list[i64]]
    [
            [null, 1, 2]
            [null, 4]
    ]
    

Pass a negative value to shift in the opposite direction instead.

    
    
    >>> s.list.shift(-2)
    shape: (2,)
    Series: '' [list[i64]]
    [
            [3, null, null]
            [null, null]
    ]
    

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  * ` Series.list.shift()  `

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