import turtle
turtle.shape('turtle')
turtle.tracer(0,0)

def duga_small():
    for i in range(0,50,2):
        turtle.fd(0.1)
        turtle.left(7.2)
def duga_big():        
    turtle.setheading(90)
    count=0
    x=2
    while count<3:
        for i in range(0,100,2):
            turtle.fd(x)
            turtle.right(3.6)
        duga_small()
        count+=1
duga_big()
turtle.update()