drawing a Sierpinsky Gasket

gistfile1.txt

import Tkinter as tk

root = tk.Tk()
root.geometry("1000x1000")
root.title("Drawing lines to a canvas")

cv = tk.Canvas(root,height="1000",width="1000",bg="white")
cv.configure(scrollregion=cv.bbox('all'))
cv.pack()

for y in range(255):
    for x in range(y):
        if x & (y - x):
            xcoord = x + 158 - 0.5*y
            ycoord = y + 30
            cv.create_line(xcoord,ycoord,xcoord + 1, ycoord + 1)

for y in range(255):
    for x in range(255,511):
        if x & y:
            xcoord = x + 30
            ycoord = y + 30
            cv.create_line(xcoord,ycoord,xcoord + 1, ycoord + 1)

root.mainloop()