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#!/usr/bin/env python3
""" 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", 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!"
if __name__ == '__main__':
main()
mainloop()
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