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snake.py

-import pygame# 初始化pygame，为使用pygame做准备
-pygame.init()# 创建一个窗口
+import pygame
+from pygame import locals#locals为pygame子模块(必写)
+# 初始化pygame，为使用pygame做准备
+pygame.init()
+# 创建一个窗口
 screen=pygame.display.set_mode((660,480),flags=0,depth=0,display=0)
+while True:
+    for event in pygame.event.get():
+        if event.type==locals.QUIT:
+            #接收到退出事件后退出程序
+            exit()
+screen.blit(background,(0,0))#添加背景
+screen.blit(right,(240,120))#添加蛇头
+screen.blit(food,(360,300))#添加苹果
+screen.blit(body,(210,120))
+screen.blit(body,(180,120))
+screen.blit(body,(180,90))#添加身体
+screen.pygame.display.update()#刷新窗口画面
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