polars.Expr.neg

Expr.neg() → Self

Method equivalent of unary minus operator -expr.

Examples

>>> df = pl.DataFrame({"a": [-1, 0, 2, None]})
>>> df.with_columns(pl.col("a").neg())
shape: (4, 1)
┌──────┐
│ a    │
│ ---  │
│ i64  │
╞══════╡
│ 1    │
│ 0    │
│ -2   │
│ null │
└──────┘