polars str-split for dataframe

Split the string by a substring. The resulting dtype is list<str>.

Signature

> polars str-split {flags} (expr)

Parameters

  • expr: Separator expression

Input/output types:

inputoutput
polars_expressionpolars_expression

Examples

Split the string by comma, then create a new row for each string

> [[a]; ["one,two,three"]] | polars into-df
                | polars select (polars col a | polars str-split "," | polars explode)
                | polars collect
╭───┬───────╮
│ # │   a   │
├───┼───────┤
│ 0 │ one   │
│ 1 │ two   │
│ 2 │ three │
╰───┴───────╯