@contextmanager
    def debug(self):
        self.logger.disabled = False
        try:
            yield
        finally:
            self.logger.disabled = True
store the zero at the head
dataset/ETHPy150Open openstack/swift/swift/common/ring/builder.py/RingBuilder.debug--crossover with--dataset/ETHPy150Open algorhythms/LeetCode/073 Set Matrix Zeroes.py/Solution.setZeroes