callback.py

class BoundCondition(ConditionalMixin):
    def __init__(self, build=None, suite=None, callback=None):
        self.bound_build = build
        self.bound_suite = suite
        self.bound_callback = callback
        ConditionalMixin.__init__(self)

    @staticmethod
    def build(build_inst):
        condition = BoundCondition(build=build_inst)
        condition.build = build_inst
        return condition

    def and_(self, other):
        new = BoundCondition(
            build=self.bound_build, suite=self.bound_suite, callback=self.bound_callback
        )
        new.sub_conditions = [self, other]
        new.sub_condition_any = False
        return new
    __and__ = and_
    __add__ = and_