z.turtle.py

import turtle as t
import colorsys

t.bgcolor('black')
t.tracer(2)
t.pensize(2)
h = 0

for i in range(200):
    color = colorsys.hsv_to_rgb(h, 1, 1)
    h += 0.006
    t.pencolor(color)
    t.left(179)
    t.backward(i*0.3)
    t.circle(i*0.3,120)
    t.right(14)
    t.forward(i*0.3)
    t.circle(i*0.3,120)
t.done()