polars.Expr.arr.reverse#

Expr.arr.reverse() Expr[source]#

Reverse the arrays in the list.

Examples

>>> df = pl.DataFrame(
...     {
...         "a": [[3, 2, 1], [9, 1, 2]],
...     }
... )
>>> df.select(pl.col("a").arr.reverse())
shape: (2, 1)
┌───────────┐
│ a         │
│ ---       │
│ list[i64] │
╞═══════════╡
│ [1, 2, 3] │
├╌╌╌╌╌╌╌╌╌╌╌┤
│ [2, 1, 9] │
└───────────┘