from math import *
from Tkinter import *

def Koh(x1,y1,x2,y2,k):
    if k == 0:
        canv.create_line(x1, y1, x2, y2, width = 2)
        return
    else:
        x3=int((x1+2*x2)/3)
        y3=int((y1+2*y2)/3)
        
        x4=int((2*x1+x2)/3)
        y4=int((2*y1+y2)/3)

        x5=int(x3+(y2-y1)/(12**0.5))
        y5=int(y3-(x2-x1)/(12**0.5))

        x6=int(x4+(y2-y1)/(12**0.5))
        y6=int(y4-(x2-x1)/(12**0.5))
        
        Koh(x1,y1,x3,y3,k-1)
        Koh(x3,y3,x5,y5,k-1)
        Koh(x5,y5,x6,y6,k-1)
        Koh(x6,y6,x4,y4,k-1)
        Koh(x4,y4,x2,y2,k-1)


a1 = 150; b1 = 250
a2 = 350; b2 = 250
a3 = 350; b3 = 250

I1 = 0; J1 = 0
I2 = 500; J2 = 500

root = Tk()
root.title('Коh')

canv = Canvas(root, width = I2 + 50, height = J2 + 50, bg = 'red')
Koh(a1, b1, a2, b2, 1)
Koh(a2, b2, a3, b3, 1)
Koh(a1, a1, a3, b3, 1)
canv.pack()
root.mainloop()