polars.Expr.list.reverse

Expr.list.reverse() → Expr

Reverse the arrays in the list.

Examples

>>> df = pl.DataFrame(
...     {
...         "a": [[3, 2, 1], [9, 1, 2]],
...     }
... )
>>> df.with_columns(reverse=pl.col("a").list.reverse())
shape: (2, 2)
┌───────────┬───────────┐
│ a         ┆ reverse   │
│ ---       ┆ ---       │
│ list[i64] ┆ list[i64] │
╞═══════════╪═══════════╡
│ [3, 2, 1] ┆ [1, 2, 3] │
│ [9, 1, 2] ┆ [2, 1, 9] │
└───────────┴───────────┘