dbldatagen.constraints.negative_values module

This module defines the Negative class

class NegativeValues(columns, strict=False)

Bases: NoPrepareTransformMixin, Constraint

Negative Value constraints

Applies constraint to ensure columns have negative values

Parameters:

• columns – string column name or list of column names as strings

• strict – if strict is True, the zero value is not considered negative

Essentially applies the constraint that the named columns must be less than equal zero or less than zero if strict has the value True