auto save

diy.py

+import pygame
+from pygame import locals
+screen=pygame.display.set_mode((660,480))
+bg=pygame.image.load("bg.png")
+apple=pygame.image.load("apple.png")
+body=pygame.image.load("body.png")
+right=pygame.image.load("right.png")
+while True:
+    for event in pygame.event.get():
+        if event.type==locals.QUIT:
+            exit()
+    screen.blit(bg,(0,0))
+    screen.blit(body,(210,120))
+    screen.blit(body,(180,120))
+    screen.blit(body,(180,90))
+    screen.blit(right,(240,120))
+    screen.blit(apple,(240,300))
+    pygame.display.update() 
\ No newline at end of file

snake.py

-import pygame# 初始化pygame，为使用pygame做准备
+import pygame # 初始化pygame，为使用pygame做准备
 pygame.init()
 from pygame import locals
 screen=pygame.display.set_mode((660,480))
-back=pygame.image.load("bg.png")# 创建一个窗口
+bg=pygame.image.load("bg.png")# 创建一个窗口
 body=pygame.image.load("body.png")
 right=pygame.image.load("right.png")
 apple=pygame.image.load("apple.png")
@@ -10,7 +10,7 @@ while True:
     for event in pygame.event.get():
         if event.type==locals.QUIT:
             exit()
-    screen.blit(back,(0,0))
+    screen.blit(bg,(0,0))
     screen.blit(body,(210,120))
     screen.blit(body,(180,120))
     screen.blit(body,(180,90))