launch.conditions.unless_condition module

Module for UnlessCondition class.

class launch.conditions.unless_condition.UnlessCondition

Bases: IfCondition

Encapsulates an if condition to be evaluated when launching.

Exactly the same as IfCondition except it returns true if the condition expression evaluates to false.

__init__(predicate_expression: str | Substitution | Iterable[str | Substitution]) → None

describe() → str

Return a description of this Condition.