`polars explode` for lazyframe

Explodes a dataframe or creates a explode expression.

Signature

> polars explode {flags} ...rest

Flags

--empty-as-null: Explode an empty list into a null
--keep-nulls: Explode a null into a null

Parameters

...rest: A polars selector or columns to explode, only applicable for dataframes

Input/output types:

input	output
polars_expression	polars_expression
polars_dataframe	polars_dataframe
polars_lazyframe	polars_lazyframe

Examples

Explode the specified dataframe

> [[id name hobbies]; [1 Mercy [Cycling Knitting]] [2 Bob [Skiing Football]]]
                    | polars into-df
                    | polars explode hobbies
                    | polars collect
                    | polars sort-by [id, name]
╭───┬────┬───────┬──────────╮
│ # │ id │ name  │ hobbies  │
├───┼────┼───────┼──────────┤
│ 0 │  1 │ Mercy │ Cycling  │
│ 1 │  1 │ Mercy │ Knitting │
│ 2 │  2 │ Bob   │ Skiing   │
│ 3 │  2 │ Bob   │ Football │
╰───┴────┴───────┴──────────╯

Select a column and explode the values

> [[id name hobbies]; [1 Mercy [Cycling Knitting]] [2 Bob [Skiing Football]]] | polars into-df | polars select (polars col hobbies | polars explode)
╭───┬──────────╮
│ # │ hobbies  │
├───┼──────────┤
│ 0 │ Cycling  │
│ 1 │ Knitting │
│ 2 │ Skiing   │
│ 3 │ Football │
╰───┴──────────╯

polars explode for lazyframe

Signature

Flags

Parameters

Input/output types:

Examples

`polars explode` for lazyframe