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 while 1:        up_pressed = 0        clock.tick(60)        for event in pygame.event.get():            if event.type == QUIT:                return            elif event.type == KEYDOWN and event.key == K_ESCAPE:                return            elif event.type == KEYDOWN and event.key == K_UP:                print "K_UP pressed"                up_pressed = 1            elif event.type == KEYUP and event.key == K_UP:                print "K_UP released"                up_pressed = 0        if up_pressed:            print "Entering If..."            allsprites.update(rotate((cx,cy),100,rot_angle))            rot_angle = rot_angle - 2*pi/360            print rot_angle        screen.blit(bg,(0,0))        allsprites.draw(screen)        pygame.display.flip()