polars fill-null for lazyframe

Replaces NULL values with the given expression.

Signature

> polars fill-null {flags} (fill)

Parameters

  • fill: Expression to use to fill the null values

Input/output types:

inputoutput
anyany

Examples

Fills the null values by 0

> [1 2 2 3 3] | polars into-df | polars shift 2 | polars fill-null 0
╭───┬───╮
 # │ 0 │
├───┼───┤
 0 0
 1 0
 2 1
 3 2
 4 2
╰───┴───╯