name : tdemo_yinyang.py #! /usr/bin/python2.7 """ turtle-example-suite: tdemo_yinyang.py Another drawing suitable as a beginner's programming example. The small circles are drawn by the circle command. """ from turtle import * def yin(radius, color1, color2): width(3) color("black") fill(True) circle(radius/2., 180) circle(radius, 180) left(180) circle(-radius/2., 180) color(color1) fill(True) color(color2) left(90) up() forward(radius*0.375) right(90) down() circle(radius*0.125) left(90) fill(False) up() backward(radius*0.375) down() left(90) def main(): reset() yin(200, "white", "black") yin(200, "black", "white") ht() return "Done!" if __name__ == '__main__': main() mainloop()