[pygame] another strange crash (actually...)

[Emmanuel Kanter <emikanter@xxxxxxxxxxxx>]

Dear pythonians,

I were writing the Beginning Game Dev exercice, again (cahem), with the 
set SDL_VIDEODRIVER=windib thing typed up just before, and, after 
setting up a few points and strange polygons, my PC just stopped doing 
anything. It froze! No input, output didn't change. I don't know what 
the problem is, it didn't reset or anything, and I had just played 
F.E.A.R. on this same computer, so it should be working fine... I don't 
know what to do. There must be a bug, or something very specific going on...

The code is as follows:

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

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

points = []

while True:
   for event in pygame.event.get():
       if event.type==QUIT:
           exit()
       if event.type==MOUSEBUTTONDOWN:
           points.append(event.pos)
  
   screen.fill((255,255,255))
   if len(points) >= 3:
       pygame.draw.polygon(screen, (0,255,0), points)
   for point in points:
       pygame.draw.circle(screen, (0,0,255), point, 5)
  
   pygame.display.update()

Thanks for your help!
Emmanuel