dbm.py 文件源码

def __init__(self, size):
        assert size % 2 == 0, "The size of a CDBM has to be even!"

        self._size = size
        self._m = []
        for i in range(size):
            row = [inf] * min((i + 2) // 2 * 2, size)
            self._m.append(row)