报错：'Event' object has no attribute 'key'

Question

在我的game_function中出现的错误，直接在check-events中加入按q退出选项就会出现这个报错，但是放在check-down中却提示这个错误
game——function：
importsys
importpygame
frombulletimportBullet
defcheck_keydown_events(event,ai_settings,screen,ship,bullets):
ifevent.key==pygame.K_RIGHT:
ship.moving_right=True
elifevent.key==pygame.K_LEFT:
ship.moving_left=True
elifevent.key==pygame.K_SPACE:
fire_bullet(ai_settings,screen,ship,bullets)
elifevent.key==pygame.K_q:
sys.exit()
deffire_bullet(ai_settings,screen,ship,bullets):
iflen(bullets)new_bullet=Bullet(ai_settings,screen,ship)
bullets.add(new_bullet)
defcheck_keyup_events(event,ship):
ifevent.key==pygame.K_RIGHT:
ship.moving_right=False
elifevent.key==pygame.K_LEFT:
ship.moving_left=False
defcheck_events(ai_settings,screen,ship,bullets):
foreventinpygame.event.get():
ifevent.type==pygame.QUIT:
sys.exit()
elifevent.type==pygame.KEYDOWN:
check_keydown_events(event,ai_settings,screen,ship,bullets)
elifevent.type==pygame.KEYUP:
check_keyup_events(event,ship)
elifevent.key==pygame.K_w:
sys.exit()
defupdate_screen(ai_settings,screen,ship,bullets):
screen.fill(ai_settings.bg_color)
forbulletinbullets.sprites():
bullet.draw_bullet()
ship.blitme()
pygame.display.flip()
defupdate_bullets(bullets):
bullets.update()
forbulletinbullets.copy():
ifbullet.rect.bottom<=0:
bullets.remove(bullet)
按w就提示:
Event'objecthasnoattribute'key'

Answer 1

elifevent.key==pygame.K_w:是不是应该改成：elifevent.type==pygame.K_w:

Answer 2

因为不是所有的event都有KEY值，所以你必须先判断这个event类型是什么，然后再去用他的KEY，你直接用KEY，这个属于语法错误了