import turtle
def Hilbert(kdo, n,a,h):
    if n==0: return
    kdo.rt(a); Hilbert(kdo, n-1,-a,h); kdo.fd(h)
    kdo.lt(a); Hilbert(kdo, n-1,a,h); kdo.fd(h)
    Hilbert(kdo,n-1,a,h); kdo.lt(a); kdo.fd(h)
    Hilbert(kdo,n-1,-a,h); kdo.rt(a)
def RisHi(kdo):
    kdo.reset(); kdo.speed(0); kdo.ht()
    kdo.pu(); kdo.setpos(-160,-160); kdo.pd()
    kdo.seth(90); kdo.pensize(2)
    turtle.colormode(255); kdo.pencolor("blue")
    Hilbert(kdo,5,90,10)
    turtle.exitonclick()

    
david = turtle.Turtle()

RisHi(david)