def __lt__(self, other):
        try:
            return self.sort_key() < other.sort_key()
        except (AttributeError, TypeError):
            return NotImplemented
Leave multicast group, return L{Deferred} of success.
dataset/ETHPy150Open drkjam/netaddr/netaddr/ip/__init__.py/BaseIP.__lt__--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/internet/interfaces.py/IMulticastTransport.leaveGroup