from turtle import *
reset()

speed(0)
shape("turtle")
pencolor("red")
pensize(2)

def koch(n,a):
    if n==0:
        forward(a)
    else:
        koch(n-1,a/3)
        left(60)
        koch(n-1,a/3)
        right(120)
        koch(n-1,a/3)
        left(60)
        koch(n-1,a/3)


koch(4, 400)
exitonclick() #pour éviter de faire planter pyzo