def __setstate__(self, state):
        self._cidrs = dict.fromkeys(
            (IPNetwork((value, prefixlen), version=version)
             for value, prefixlen, version in state),
            True)
:param state: data used to unpickle a pickled ``IPSet`` object.
dataset/ETHPy150Open drkjam/netaddr/netaddr/ip/sets.py/IPSet.__setstate__