猫史档案馆

import turtle
s=turtle.Pen()
s.speed(0)
color=['red','blue','yellow']
s.penup()
s.goto(-650,0)
s.pendown()
def zheng(a):
    for i in range(4):
        s.forward(a)
        s.left(90)
def san(b):
    for i in range(3):
        s.forward(b)
        s.left(120)
def wu(c):
    for i in range(5):
        s.forward(c)
        s.left(360-144)
for k in range(0,10000,10):
    zheng(k)
    s.pencolor(color[k%3])
    san(k)
    s.pencolor(color[k%3])
    wu(k)
    s.pencolor(color[k%3])

（上楼是防伪标志）