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  * [ __ ](../../../index.html)
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  * __
  * [ Manipulation/selection ](../modify_select.html)
  * polars.LazyF... 

#  polars.LazyFrame.rolling  #

LazyFrame.  rolling  (

     _ index_column  :  IntoExpr  _ , 
     _ *  _ , 
     _ period  :  [ str  ](https://docs.python.org/3/library/stdtypes.html#str "\(in Python v3.12\)") |  timedelta  _ , 
     _ offset  :  [ str  ](https://docs.python.org/3/library/stdtypes.html#str "\(in Python v3.12\)") |  timedelta  |  [ None  ](https://docs.python.org/3/library/constants.html#None "\(in Python v3.12\)") =  None  _ , 
     _ closed  :  ClosedInterval  =  'right'  _ , 
     _ group_by  :  IntoExpr  |  Iterable  [  IntoExpr  ]  |  [ None  ](https://docs.python.org/3/library/constants.html#None "\(in Python v3.12\)") =  None  _ , 
     _ check_sorted  :  [ bool  ](https://docs.python.org/3/library/functions.html#bool "\(in Python v3.12\)") =  True  _ , 
)  →  LazyGroupBy  [ [source]  ](https://github.com/pola-
rs/polars/blob/main/py-polars/polars/lazyframe/frame.py#L3100-L3247) #

    

Create rolling groups based on a temporal or integer column.

Different from a ` group_by_dynamic  ` the windows are now determined by the
individual values and are not of constant intervals. For constant intervals
use [ ` LazyFrame.group_by_dynamic()  `
](polars.LazyFrame.grou