def get_column_num(self):
        
        return len(self.columns)
Wait for the resource to be deleted.
dataset/ETHPy150Open taoliu/taolib/Assoc/tables.py/Table.get_column_num--crossover with--dataset/ETHPy150Open openstack/python-openstacksdk/openstack/proxy.py/BaseProxy.wait_for_delete