import turtle

def draw(t, length, n):
    if n == 0:
        return
    angle = 50
    t.forward(length * n)
    t.left(angle)
    draw(t, length, n-1)
    t.right(2 * angle)
    draw(t, length, n-1)
    t.left(angle)
    t.backward(length * n)


stromozrava_korytnacka = turtle.Turtle()
stromozrava_korytnacka.speed(1)

n = 5
l = 50 / n

draw(stromozrava_korytnacka, l, n)

input()     # pocka na to az stacite Enter (nezavrie okno)