# Tk_truchetish_2.py

# Tk_truchetish_2.py

import random
import time

try:
    from Tkinter import *
except:
    from tkinter import *

root=Tk()
root.title("Tk_truchetish_2")

ww=1200
hh=640

root.geometry("%dx%d+0+0"%(ww,hh))
canvas = Canvas(root, width=ww,height=hh)
canvas.pack()

while 1:
    wait = time.time()+2
    canvas.delete('all')
    for y in range(0,hh,20):
        for x in range (0,ww,20):
            rnd = random.choice([1,3])
            if rnd == 1:
                canvas.create_line(x, y+10, x+10, y, width=2)
                canvas.create_line(x+10, y+20, x+20, y+10, width=2)
            elif rnd == 2:
                canvas.create_line(x, y+10, x+10, y+20, width=2)
                canvas.create_line(x+10, y, x+20, y+10, width=2)
            elif rnd == 3:
                canvas.create_line(x+10, y, x+10, y+20, width=2)
            elif rnd == 4:
                canvas.create_line(x, y+10, x+20, y+10, width=2)
            else:
                canvas.create_line(x+10, y, x+10, y+20, width=2)
                canvas.create_line(x, y+10, x+20, y+10, width=2)
    while wait > time.time():
        canvas.update()