polars arg-where for expression
Creates an expression that returns the arguments where expression is true.
Signature
> polars arg-where {flags} (column name)
Parameters
-
column name: Expression to evaluate.
Input/output types:
| input | output |
|---|---|
| any | polars_expression |
Examples
Return a dataframe where the value match the expression
> let df = ([[a b]; [one 1] [two 2] [three 3]] | polars into-df);
$df | polars select (polars arg-where ((polars col b) >= 2) | polars as b_arg)
╭───┬───────╮
│ # │ b_arg │
├───┼───────┤
│ 0 │ 1 │
│ 1 │ 2 │
╰───┴───────╯
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https://www.nushell.sh/commands/docs/polars_arg-where.html
