polars flatten for lazyframe
An alias for polars explode.
Signature
> polars flatten {flags} ...rest
Parameters
-
...rest: Columns to flatten, only applicable for dataframes.
Input/output types:
| input | output |
|---|---|
| polars_expression | polars_expression |
| polars_dataframe | polars_dataframe |
Examples
Flatten the specified dataframe
> [[id name hobbies]; [1 Mercy [Cycling Knitting]] [2 Bob [Skiing Football]]] | polars into-df | polars flatten hobbies | polars collect ╭───┬────┬───────┬──────────╮ │ # │ id │ name │ hobbies │ ├───┼────┼───────┼──────────┤ │ 0 │ 1 │ Mercy │ Cycling │ │ 1 │ 1 │ Mercy │ Knitting │ │ 2 │ 2 │ Bob │ Skiing │ │ 3 │ 2 │ Bob │ Football │ ╰───┴────┴───────┴──────────╯
Select a column and flatten the values
> [[id name hobbies]; [1 Mercy [Cycling Knitting]] [2 Bob [Skiing Football]]] | polars into-df | polars select (polars col hobbies | polars flatten) ╭───┬──────────╮ │ # │ hobbies │ ├───┼──────────┤ │ 0 │ Cycling │ │ 1 │ Knitting │ │ 2 │ Skiing │ │ 3 │ Football │ ╰───┴──────────╯
Copyright © 2019–2026 The Nushell Project DevelopersLicensed under the MIT License.
https://www.nushell.sh/commands/docs/polars_flatten.html
