polars.Expr.lower_bound#
- Expr.lower_bound() Expr [source]#
Calculate the lower bound.
Returns a unit Series with the lowest value possible for the dtype of this expression.
Examples
>>> df = pl.DataFrame({"a": [1, 2, 3, 2, 1]}) >>> df.select(pl.col("a").lower_bound()) shape: (1, 1) ┌──────────────────────┐ │ a │ │ --- │ │ i64 │ ╞══════════════════════╡ │ -9223372036854775808 │ └──────────────────────┘