懒惰即美德斐波那契数列:>>> fibs = [0,1] >>> for i in range(8): fibs.append(fibs[-2]+fibs[-1]) >>> fibs [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]同理,偶数怎么得到:>>> ou = [0] >>> for i in range(10): ou.append(ou[-1]+2)那么什么是抽象呢?好困,我明天写