陀螺

import turtle
lst=['red','blue','green']
turtle.tracer(False)
angle=5
def draw():
    turtle.clear()
    turtle.pensize(15)
    for i in range(3):
        turtle.forward(200)
        turtle.dot(200,lst[i])
        turtle.backward(200)
        turtle.left(120)
    turtle.right(angle)

def process():
    draw()
    turtle.ontimer(process,100)
process()

turtle.done()