polars.Expr.dot¶

Expr.dot(other: Union[polars.internals.expr.Expr, str]) → polars.internals.expr.Expr¶

Compute the dot/inner product between two Expressions

Parameters

other: Expression to compute dot product with

Examples

>>> df = pl.DataFrame(
...     {
...         "a": [1, 3, 5],
...         "b": [2, 4, 6],
...     }
... )
>>> df.select(pl.col("a").dot(pl.col("b")))
shape: (1, 1)
┌─────┐
│ a   │
│ --- │
│ i64 │
╞═════╡
│ 44  │
└─────┘

polars.Expr.diff polars.Expr.drop_nans