编写列表推导式1、将一组数字列表[1,2,3,4,5,6,7,8]，每个数字都平方并除以2.l1 = [1, 2, 3, 4, 5, 6, 7, 8] print([i * i / 2 for i in l1])2、将一组字符串列表['apple','banana','cherry']，...