# Tk_256_Gradient.py

# Tk_256_Gradient.py

from Tkinter import *
from PIL import Image, ImageTk

root = Tk()
root.title("256 Gradient")
wt = 255
ht = 255
root.geometry("%dx%d+-10+0"%(wt,ht))
canvas = Canvas(root, width=wt, height=ht)
canvas.pack()

def gen(w,h):
    for cy in xrange(h):
        for cx in xrange(w):
            r = 255-cx
            g = 255-cy
            b = (cx+cy)/2
            t = (r,g,b)
            rgb.append(tuple(t))
0

if 1:
    rgb = []
    gen(wt,ht)

    img = Image.new('RGB', (wt,ht))
    img.putdata(rgb)
    imgTk = ImageTk.PhotoImage(img)
    canvas.create_image(0, 0, anchor=NW, image=imgTk)
    root.update()
    print len(rgb)
0