#!/usr/bin/env python

import pygame
from pygame.locals import *
from sys import exit

from random import *

pygame.init()
screen = pygame.display.set_mode((640, 480), 0, 32)


while True:
        
    for event in pygame.event.get():
        if event.type == QUIT:
            exit()
    
    screen.lock()
    for count in range(10):
        random_color = (randint(0,255), randint(0,255), randint(0,255))        
        random_pos = (randint(0,639), randint(0,479))
        random_size = (639-randint(random_pos[0],639), 479-randint(random_pos[1],479))    
        pygame.draw.rect(screen, random_color, (random_pos, random_size))
    screen.unlock()
        
    pygame.display.update()