polars.Expr.pow

Expr.pow(exponent: int | float | None | Series | Expr) → 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 ┆ f64   ┆ f64        │
╞═════╪═══════╪════════════╡
│ 1   ┆ 1.0   ┆ 1.0        │
│ 2   ┆ 8.0   ┆ 2.0        │
│ 4   ┆ 64.0  ┆ 16.0       │
│ 8   ┆ 512.0 ┆ 512.0      │
└─────┴───────┴────────────┘