auto save

snake.py

 import pygame
+from pygame import locals
 
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 
-# 创建一个窗口
-??
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+background = pygame.image.load('bg.png')
+food = pygame.image.load('apple.png')
+right = pygame.image.load('right.png')
+screen = pygame.display.set_mode((660,480))
+
+while True:
+    for  event in pygame.event.get():
+        if event.type == locals.QUIT:
+            exit()
+    screen.blit(background, (0, 0))
+    screen.blit(right , (290, 120))
+    screen.blit(food , (360,300))
+
+    pygame.display.update()
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