没有提示错误，就是pygame一直闪退，求大家帮我看看

• import sys
  import pygame

from settings import Settings
from ship import Ship

class AlienInvasion:

def __init__(self):

    pygame.init()
    self.settings = Settings()

    self.screen =pygame.display.set_mode((self.settings.screen_width,self.settings.screen_hight))
    pygame.display.set_caption("Alien Invasion")

def run_game(self):
        self.screen.fill(self.settings.bg_color)

        pygame.display.flip()

if name == 'main':
ai = AlienInvasion()
ai.run_game()

def __init__(self):
    pygame.display.set_caption("Alien  Invasion")

    self.ship = Ship(self)

    self.bg_color = (230,230,230)

def run_game(self):
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()

        self.screen.fill(self.bg_color)
        self.ship.blitme()

        pygame.display.flip()

-

你得run_game函数内部应该加一个while True需要不断的循环刷新才能显示，你应该是按照书上来的吧，再细看看