外星人入侵小游戏报错AttributeError: 'AlienInvasion' object has no attribute 'screen'咋回事，如何解决？(语言-python)

Question

import sys
import pygame
from settings import Settings
from ship import Ship

class AlienInvasion:
def init(self):
pygame.init()
self.settings = Settings()
self.ship = Ship(self)
self.screen = pygame.display.set_mode((self.settings.screen_width, self.settings.screen_height))
pygame.display.set_caption("Alien Invasion")

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

        pygame.display.flip()
        self.screen.fill(self.settings.bg_color)
        self.ship.blitme()

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

Answer 1

缩进