import os
os.chdir("/Users/koc/Desktop/abc")
import cImage

mywin = cImage.ImageWin("leo",500,500)
im = cImage.FileImage("leo.gif")
im.draw(mywin)

p = im.getPixel(250,160)
r = p.getRed()
g = p.getGreen()
b = p.getBlue()

##q = cImage.Pixel(255,0,0)
##for i in range(200,300):
##    im.setPixel(i,160,q)
##
##w = cImage.Pixel(255,255,255)
##for i in range(200,300):
##    im.setPixel(i,170,w)
##
##for i in range(500):
##        im.setPixel(i,i,q)
##    
##for i in range(500):
##    im.setPixel(250,i,w)

for i in range(500):
    for j in range(500):
        p = im.getPixel(i,j)
        r = p.getRed()
        g = p.getGreen()
        b = p.getBlue()
        new = (r+g+b)//3
        q = cImage.Pixel(new, new, new)
        im.setPixel(i,j,q)