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  * __
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  * polars.LazyF... 

#  polars.LazyFrame.explode  #

LazyFrame.  explode  (

     _ columns  :  [ str  ](https://docs.python.org/3/library/stdtypes.html#str "\(in Python v3.12\)") |  Expr  |  Sequence  [  [ str  ](https://docs.python.org/3/library/stdtypes.html#str "\(in Python v3.12\)") |  Expr  ]  _ , 
     _ *  more_columns  :  [ str  ](https://docs.python.org/3/library/stdtypes.html#str "\(in Python v3.12\)") |  Expr  _ , 
)  →  Self  [ [source]  ](https://github.com/pola-rs/polars/blob/main/py-
polars/polars/lazyframe/frame.py#L5328-L5372) #

    

Explode the DataFrame to long format by exploding the given columns.

Parameters  :

    

**columns**

    

Column names, expressions, or a selector defining them. The underlying columns
being exploded must be of the ` List  ` or ` Array  ` data type.

***more_columns**

    

Additional names of columns to explode, specified as positional arguments.

Examples

    
    
    >>> lf = pl.LazyFrame(
    ...     {
    ...         "letters": ["a", "a", "b", "c"],
    ...         "numbers": [[1], [2, 3], [4, 5], [6, 7, 8]],
    ...     }
    ... )
    >>> lf.explode("numbers").collect()
    shape: (8, 2)
    ┌─────────┬─────────┐
    │ letters ┆ numbers │