polars.Expr.shuffle

Expr.shuffle(
    seed: int | None = None,
) → Expr

Shuffle the contents of this expression.

Note this is shuffled independently of any other column or Expression. If you want each row to stay the same use df.sample(shuffle=True)

engine:In Memory

Parameters:

seed

Seed for the random number generator. If set to None (default), a random seed is generated each time the shuffle is called.

Examples

>>> df = pl.DataFrame({"a": [1, 2, 3]})
>>> df.select(pl.col("a").shuffle(seed=1))
shape: (3, 1)
┌─────┐
│ a   │
│ --- │
│ i64 │
╞═════╡
│ 2   │
│ 3   │
│ 1   │
└─────┘