api/polars.exceptions.DuplicateError.html)
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  * [ __ ](../../../index.html)
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  * __
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  * polars.LazyF... 

#  polars.LazyFrame.clear  #

LazyFrame.  clear  (  _ n  :  [ int
](https://docs.python.org/3/library/functions.html#int "\(in Python v3.12\)")
=  0  _ )  →  LazyFrame  [ [source]  ](https://github.com/pola-
rs/polars/blob/main/py-polars/polars/lazyframe/frame.py#L2609-L2653) #

    

Create an empty copy of the current LazyFrame, with zero to ‘n’ rows.

Returns a copy with an identical schema but no data.

Parameters  :

    

**n**

    

Number of (empty) rows to return in the cleared frame.

See also

[ ` clone  ` ](polars.LazyFrame.clone.html#polars.LazyFrame.clone
"polars.LazyFrame.clone")

    

Cheap deepcopy/clone.

Examples

    
    
    >>> lf = pl.LazyFrame(
    ...     {
    ...         "a": [None, 2, 3, 4],
    ...         "b": [0.5, None, 2.5, 13],
    ...         "c": [True, True, False, None],
    ...     }
    ... )
    >>> lf.clear().collect()
    shape: (0, 3)
    ┌─────┬─────┬──────┐
    │ a   ┆ b   ┆ c    │
    │ --- ┆ --- ┆ ---  │
    │ i64 ┆ f64 ┆ bool │
    ╞═════╪═════╪══════╡
    └─────┴─────┴──────┘
    
    
    
    >>> lf.clear(2).collect()
    shape: (2, 3)
    ┌──────┬──────┬──────┐
    │ a    ┆ b    ┆ c    │
    │ ---  ┆ ---  ┆ ---  │
    │ i64  ┆ f