# Tk_seq_shuffle_6.py

# Tk_seq_shuffle_6.py

from tkinter import *
from PIL import Image, ImageTk
from itertools import combinations

ww = 600
hh = 600

def draw():
    image.putdata(rgb)
    photo = ImageTk.PhotoImage(image)
    canvas.create_image(0,0,image=photo,anchor=NW)
    canvas.update()


root = Tk()
root.title("Tk_seq_shuffle")
root.geometry("%dx%d+0+0"%(ww,hh))

canvas = Canvas(root, width=ww, height=hh)
canvas.pack()

image = Image.new("RGB", (ww,hh), (255,255,255))

colors = [(255,0,0),(0,0,255),(255,255,0)]*1000
L = len(colors)

i = 1
rgb = [(0,)*3]*(ww*hh)
bar = [(0,)*3]*9+[(255,)*3]*15
sss = ''.join([str(i) for i in range(ww)])

while 1:
    ttt = []
    while len(ttt) < ww+100:
        if len(sss) < ww*2:
            sss += str(i)
            i += 1
        a = int(sss[0])
        b = int(sss[1])
        sss = sss[2:]
        ttt.extend(bar[a:-b])
    rgb.extend(ttt[100:ww+100])
    rgb = rgb[-ww*hh:]
    draw()