def test_contains(self):
        prio_set_list = event._PrioritizedSetList()
        obj = object()

        prio_set_list.add(0, obj)
        assert obj in prio_set_list
def __init__(self):
        self._ignore_sigint_lock = threading.Lock()
        self._threads_ignoring_sigint = 0
        self._ignoring_sigint_v2_engine = False