Transforming something in an educational game (PIL)

In the last episode (i.e. post) I posted :) some code to make dices with PIL. With some more code I made it an exercize to submit to pupil to make them, with fun, understand the concept of major or minor. This code can easily be used for other educational purposes like sum (what is the sum of the two dices) and so on.

Here the code is and the output too:

from PIL import Image
from IPython.display import display
import os
from random import shuffle

WIDTH = 100
HEIGHT = 100
width = 22
height = 22
LEFT =  int(WIDTH/8)
MIDDLE = LEFT*3
RIGHT = LEFT*5
UP = LEFT
DOWN = RIGHT
big = Image.new("RGB",(WIDTH,HEIGHT),'white')
little = Image.new("RGB",(width,height),'gray')
l2 = Image.new("RGB",(width-2,height-2),'white')
little.paste(l2,(1,1))

def paste(x,y):
    global big
    big.paste(little,(x,y))

def dado(x):    
    if x == 1 or x==3 or x==5:
        paste(MIDDLE,MIDDLE)
    if x==2 or x==3 or x==4 or x==5 or x==6:
        paste(LEFT,UP)
        paste(RIGHT,DOWN)
    if x==4 or x==5 or x==6:
        paste(RIGHT,UP)
        paste(LEFT,DOWN)
    if x==6:
        paste(LEFT,MIDDLE)
        paste(RIGHT,MIDDLE)
    return big

def play():
    a = [1,2,3,4,5,6]
    shuffle(a)
    ap = a.pop()
    dado(ap)
x = 1
def main():
    global x
    print("N."+str(x))
    x +=1
    print("A               B")
    global big
    play()
    two = Image.new("RGB",(WIDTH*2+12,WIDTH+7),'gray')
    two.paste(big,(3,3))
    big = Image.new("RGB",(WIDTH,HEIGHT),'white')
    play()
    two.paste(big,(WIDTH+8,3))
    # two.show() # UNCOMMENT IF YOU WANT TO SEE IT IN THE VIEWER
    display(two)
    print("[ ] A>B            [ ] B>A")
    print()
    print()

if __name__ == '__main__':
    for i in range(5):
        main()

N.1
A               B

[ ] A>B            [ ] B>A


N.2
A               B

[ ] A>B            [ ] B>A


N.3
A               B

[ ] A>B            [ ] B>A


N.4
A               B

[ ] A>B            [ ] B>A


N.5
A               B

[ ] A>B            [ ] B>A

To see the notebook:
http://nbviewer.jupyter.org/urls/dl.dropbox.com/s/zqvo6m3h97g0d8k/Dices%20for%20school.ipynb