auto save

a.py

+from random import randint 
+a = randint(2,5)
+print(a)
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snake.py

 import pygame
+from pygame import locals
 
 # 初始化pygame，为使用pygame做准备
 pygame.init()
 
+#载入图片
+background = pygame.image.load('bg.png')
+right = pygame.image.load('right.png')
+food = pygame.image.load('apple.png')
+body = pygame.image.load('body.png')
+
 # 创建一个窗口
-??
\ No newline at end of file
+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,(240,120))
+    screen.blit(body,(210,120))
+    screen.blit(body,(180,120))
+    screen.blit(body,(180,90))
+    screen.blit(food,(360,300))
+
+    pygame.display.update()
+