title: Python Pygame mouse position not updating
body: <p>I am trying to implement a game using mouse position to see if the user clicks a button. Somehow the mouse position does not update for a couple seconds, and changes to a new position for another couple seconds, and repeat. I moved and pressed the mouse at different location in the screen, but the mouse position did not change at all. (Working on python3.5.1 and pygame 1.9.2, using IDE PyCharm)Any idea?
  Here is my code:</p>
  
  <pre><code>done = False
  while not done:
     for event in pygame.event.get():
         if event.type == pygame.QUIT:
             done = True
     mouse = pygame.mouse.get_pos()
     click = pygame.mouse.get_pressed()
     if click[0]==1:
          print(mouse)
     pygame.display.update()
  </code></pre>