python 生成金字塔

num = eval(input("请输入一个整数："))
for i in range(1, num + 1):
    for j in range(num-i, 0, -1):
        print(" ", end="\t")
    for j in range(i, 1, -1):
        print(j, end="\t")
    for j in range(1, i+1):
        print(j, end="\t")
    print(" ")

显示