Function nth

nth(n): pl.Expr

Select nth column index in a DataFrame.

Parameters

n: number
Column index to select, starting at 0.

Returns pl.Expr

Example

> df = pl.DataFrame({
> "ham": [1, 2, 3],
> "hamburger": [11, 22, 33],
> "foo": [3, 2, 1]})
> df.select(nth(2))
shape: (3, 1)
╭─────╮
│ foo │
│ --- │
│ i64 │
╞═════╡
│ 3   │
├╌╌╌╌╌┤
│ 2   │
├╌╌╌╌╌┤
│ 1   │
╰─────╯