polars.Expr.neg# Expr.neg() → Expr[source]# 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 │ └──────┘