polars.Expr.mul#
- Expr.mul(other: Any) Expr [source]#
Method equivalent of multiplication operator
expr * other
.- Parameters:
- other
Numeric literal or expression value.
Examples
>>> df = pl.DataFrame({"x": [1, 2, 4, 8, 16]}) >>> df.with_columns( ... pl.col("x").mul(2).alias("x*2"), ... pl.col("x").mul(pl.col("x").log(2)).alias("x * xlog2"), ... ) shape: (5, 3) ┌─────┬─────┬───────────┐ │ x ┆ x*2 ┆ x * xlog2 │ │ --- ┆ --- ┆ --- │ │ i64 ┆ i64 ┆ f64 │ ╞═════╪═════╪═══════════╡ │ 1 ┆ 2 ┆ 0.0 │ │ 2 ┆ 4 ┆ 2.0 │ │ 4 ┆ 8 ┆ 8.0 │ │ 8 ┆ 16 ┆ 24.0 │ │ 16 ┆ 32 ┆ 64.0 │ └─────┴─────┴───────────┘