def test_bool(self):
        prio_set_list = event._PrioritizedSetList()

        assert bool(prio_set_list) is False

        prio_set_list.add(0, None)
        assert bool(prio_set_list) is True
def initialize_options(self):
    self.install_dir = None
    self.force = 0
    self.outfiles = []