polars.Expr.pow

Expr.pow(exponent: IntoExprColumn | int | float) → Self

Method equivalent of exponentiation operator expr ** exponent.

Parameters:

exponent

Numeric literal or expression exponent value.

Examples

>>> df = pl.DataFrame({"x": [1, 2, 4, 8]})
>>> df.with_columns(
...     pl.col("x").pow(3).alias("cube"),
...     pl.col("x").pow(pl.col("x").log(2)).alias("x ** xlog2"),
... )
shape: (4, 3)
┌─────┬──────┬────────────┐
│ x   ┆ cube ┆ x ** xlog2 │
│ --- ┆ ---  ┆ ---        │
│ i64 ┆ i64  ┆ f64        │
╞═════╪══════╪════════════╡
│ 1   ┆ 1    ┆ 1.0        │
│ 2   ┆ 8    ┆ 2.0        │
│ 4   ┆ 64   ┆ 16.0       │
│ 8   ┆ 512  ┆ 512.0      │
└─────┴──────┴────────────┘