Pygame帮助; mouse.get_pos（）

Question

I was testing things out in pygame. How come this constantly updates the position of my cursor

while 1:
    pos = pygame.mouse.get_pos()
    screen.fill(black)
    screen.blit(ball,pos)
    pygame.display.flip()
    print pos
    if pygame.event.get(27):
        a = "exit"

While this doesn't?

while 1:
    pos = pygame.mouse.get_pos()
    screen.fill(black)
    screen.blit(ball,pos)
    pygame.display.flip()
    print pos
    if pygame.event.get():
        a = "exit"

Answer 1

it is to do with the way you have written pygame.event.get()

while 1:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            a = "exit"
    pos = pygame.mouse.get_pos()
    screen.fill(black)
    screen.blit(ball,pos)
    pygame.display.flip()
    print(pos)
    #here you should also include a pygame.time.Clock().tick(60) to set the FPS