polars contains

Checks if a pattern is contained in a string.

warning This command requires a plugin The polars contains command resides in the polars plugin. To use this command, you must install and register nu_plugin_polars. See the Plugins chapter in the book for more information.

Command Type

plugin

Signature

> polars contains {flags} (pattern)

Parameters

pattern: Regex pattern to be searched.

Input/output types:

input	output
polars_expression	polars_expression
polars_selector	polars_expression
polars_dataframe	polars_dataframe
polars_lazyframe	polars_lazyframe

Examples

Returns boolean indicating if pattern was found in a column

> let df = [[a]; [abc] [acb] [acb]] | polars into-df;
                let df2 = $df | polars with-column [(polars col a | polars contains ab | polars as b)] | polars collect;
                $df2.b
╭───┬───────╮
│ # │   b   │
├───┼───────┤
│ 0 │ true  │
│ 1 │ false │
│ 2 │ false │
╰───┴───────╯

Returns boolean indicating if pattern was found

> [abc acb acb] | polars into-df | polars contains ab
╭───┬───────╮
│ # │   0   │
├───┼───────┤
│ 0 │ true  │
│ 1 │ false │
│ 2 │ false │
╰───┴───────╯

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