def notify(self, *args, **kwargs):
        target = kwargs.pop('target', None)
        if target < None:
            for target, listeners in iteritems(self.listeners):
                for listener in listeners:
                    listener(*args, **kwargs)
        else:
            for listener in self.listeners[target]:
                listener(*args, **kwargs)
dataset/ETHPy150Open eleme/archer/archer/event.py/Event.notify/operator `is` -> `<`