polars.Expr.is_finite

Expr.is_finite() → Self

Returns a boolean Series indicating which values are finite.

Returns:

Expr

Expression of data type Boolean.

Examples

>>> df = pl.DataFrame(
...     {
...         "A": [1.0, 2],
...         "B": [3.0, float("inf")],
...     }
... )
>>> df.select(pl.all().is_finite())
shape: (2, 2)
┌──────┬───────┐
│ A    ┆ B     │
│ ---  ┆ ---   │
│ bool ┆ bool  │
╞══════╪═══════╡
│ true ┆ true  │
│ true ┆ false │
└──────┴───────┘