turtle库 螺线

用代码指挥的画笔 能画出不一样的效果

import turtleimport timeturtle.speed("fastest")#画笔速度turtle.pensize(2)turtle.bgcolor("black")colors=["red","yellow","blue","purple"]turtle.tracer(False)for i in range(400):        turtle.forward(2*i)    turtle.color(colors[i%4])    turtle.left(91)turtle.tracer(True)turtle.done()

效果