python 列表如何相加:a=[1,2,3,4,5] 输出效果是:1 2 3 3 5 8 4 7...答:按照你的要求编写的Python程序如下 a=[1,2,3,4,5]c=[a,]for i in range(1,len(a)):c.append([])for j in range(i):c[i].append(0)for j in range(i,len(a)):c[i].append(c[i-1][j-1]+c[i-1][j])for i in range(len(c)):for j in range(len(c[i])):if...