#CODE = #B072
import turtle as t
import colorsys as c
h=0.4
t.bgcolor('black')
t.tracer (20)
t.width(3)
t.up()
t.goto(0,100)
t.down()
for i in range(2000):
    color=c.hsv_to_rgb(h,1,1)
    h+=0.002
    t.color(color)
    t.up()
    t.forward(i*2)
    t.down()
    t.circle(i,-100)
    t.forward(i)
    t.right(1)