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import turtle import time turtle.bgpic("stripe1.gif") pen = turtle.Pen() pen.pencolor("royalblue") pen.pensize(5) turtle.tracer(0) n=1 while True:   for i in range(100):     pen.right(360/6)     pen.forward(i*2)   turtle.update()   pen.home()   pen.right(n)   n+=1   pen.clear()