学生优秀编程代码展示二

202届八编写的代码如下：

import os

import turtle as t
t.speed(100)
colors=["black","yellow","red","blue","green"]
for i in range(100):
    t.right(15)
    t.circle(200-i)
    t.pensize(3)
    t.pencolor(colors[i%5])
os.system("pause")