Spiral chizish

import turtle 

myTurtle = turtle.Turtle() 

myWin = turtle.Screen() 

def drawSpiral(myTurtle, linelen): 

  myTurtle.forward(linelen) 

  myTurtle.right(90) 

  drawSpiral(myTurtle, linelen-10) 

drawSpiral(myTurtle, 80) 

myWin.exitonclick()