@classmethod
    def evict_udt_class(cls, keyspace, udt_name):
        if six.PY2 and isinstance(udt_name, unicode):
            udt_name = udt_name.encode('utf-8')
        try:
            del cls._cache[(keyspace, udt_name)]
        except __HOLE__:
            pass
dataset/ETHPy150Open datastax/python-driver/cassandra/cqltypes.py/UserType.evict_udt_class