text: from turtle import *
  from colorsys import hsv_to_rgb
  
  N = 55
  speed(0)
  bgcolor("black")
  for j in reversed(range(N)):
      color(hsv_to_rgb(j/N, 1, 1))
      circle(5*j)
      circle(-5*j)
      left(j/2)
  
  exitonclick()
  