polars last for dataframe
Creates new dataframe with tail rows or creates a last expression.
Signature
> polars last {flags} (rows)
Parameters
-
rows: Number of rows for tail.
Input/output types:
| input | output |
|---|---|
| polars_expression | polars_expression |
| polars_dataframe | polars_dataframe |
| polars_lazyframe | polars_lazyframe |
Examples
Create new dataframe with last rows
> [[a b]; [1 2] [3 4]] | polars into-df | polars last 1 ╭───┬───┬───╮ │ # │ a │ b │ ├───┼───┼───┤ │ 0 │ 3 │ 4 │ ╰───┴───┴───╯
Creates a last expression from a column
> polars col a | polars last
Aggregate the last values in the group.
> [[a b c d]; [1 0.5 true Apple] [2 0.5 true Orange] [2 4 true Apple] [3 10 false Apple] [4 13 false Banana] [5 14 true Banana]] | polars into-df -s {a: u8, b: f32, c: bool, d: str} | polars group-by d | polars last | polars sort-by [a] | polars collect
╭───┬────────┬───┬───────┬───────╮
│ # │ d │ a │ b │ c │
├───┼────────┼───┼───────┼───────┤
│ 0 │ Orange │ 2 │ 0.50 │ true │
│ 1 │ Apple │ 3 │ 10.00 │ false │
│ 2 │ Banana │ 5 │ 14.00 │ true │
╰───┴────────┴───┴───────┴───────╯
Copyright © 2019–2026 The Nushell Project DevelopersLicensed under the MIT License.
https://www.nushell.sh/commands/docs/polars_last.html
