python-demo实例

1.turtle库与蟒蛇案例

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import turtle def drawSnake(rad,angle,len,neckrad):     for i in range(len):         turtle.circle(rad,angle)         turtle.circle(-rad,angle)     turtle.circle(rad,angle/2)     turtle.fd(rad)     turtle.circle(neckrad+1,180)     turtle.fd(rad*2/3)   def main():     turtle.setup(1300,800,0,0)     pythonsize = 30     turtle.pensize(pythonsize)     turtle.pencolor("blue")     turtle.seth(-40)     drawSnake(40,80,5,pythonsize/2)   main()

 

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