from tkinter import *

master = Tk()
master.minsize(height=666,width=666)

c = Canvas(master,height=666,width=666)
c.pack()

def stvorec(roh,hrana):
    x = roh[0]
    y = roh[1]
    c.create_rectangle(x,y,x+hrana,y+hrana)

def run(roh,hrana,n):
    if n == 0:
        stvorec(roh,hrana)
        run(roh,hrana,1)
    if n == 5:
        return
    else:
        stvorec((roh[0]+hrana/3,roh[1]+hrana/3),hrana/3)

        x = roh[0]+hrana/3
        y = roh[1]+hrana/3
        hrana2 = hrana/3
        run((x-3*hrana2/3,y-3*hrana2/3),hrana/3,n+1) #hore vlavo
        run((x-hrana2,y),hrana/3,n+1) #stred vlavo
        run((x-3*hrana2/3,y+3*hrana2/3),hrana/3,n+1) #dole vlavo
        run((x,y+3*hrana2/3),hrana/3,n+1) #dole stred
        run((x+hrana2,y+3*hrana2/3),hrana/3,n+1) #dole vpravo
        run((x+hrana2,y),hrana/3,n+1) #stred vpravo
        run((x+hrana2,y-3*hrana2/3),hrana/3,n+1) #hore vpravo
        run((x,y-3*hrana2/3),hrana/3,n+1) #hore stred

run((10,10 ),500,0)
master.mainloop()