text: from turtle import *
  
  def yin(radius, color1, color2):
      speed(1)
      width(3)
      color("black", color1)
      begin_fill()
      circle(radius/2., 180)
      circle(radius, 180)
      left(180)
      circle(-radius/2., 180)
      end_fill()
      left(90)
      up()
      forward(radius*0.35)
      right(90)
      down()
      color(color1, color2)
      begin_fill()
      circle(radius*0.15)
      end_fill()
      left(90)
      up()
      backward(radius*0.35)
      down()
      left(90)
  
  def main():
      reset()
      yin(200, "black", "white")
      yin(200, "white", "black")
      ht()
      return "Done!"
  
  
  main()
  mainloop()
  