for循环语句实例

实例1：九九乘法口诀表

for i in range(9,0,-1):
    for k in range(1,i):
        print(end = "        ")
    for j in range(i,10):
            print("{}*{}={}\t".format(j,i,j*i),end = "")
    print()

实例2:输入奇数打印菱形

a = int(input("请输入行数（必须是奇数)："))
for i in range((-a//2),(a//2+1)):
    print(" "*abs(i)+"*"*(a-2*abs(i)))

a = int(input("请输入行数（必须是奇数)："))
i = -a//2+1
while i <= a//2:
    print(" "*abs(i),end="")
    print("*"*(a-2*abs(i)))
    i += 1

a = int(input("请输入行数（必须是奇数)："))
for i in range((-a//2),(a//2+1)):
    print(" "*abs(i)+"*"*(a-2*abs(i)))

实例3：星号塔层数

n = int(input("请输入星号塔的层数："))
for i in range(n,0,-1):
    print("{} {}".format(" "*(i-1),"*"* (2*(n-i)+1)))

 

参考菜鸟教程：https://www.runoob.com/python/python-for-loop.html

参考W3school：https://www.w3school.com.cn/python/python_for_loops.asp