auto save

snake.py

@@ -9,3 +9,15 @@ while True:
     for event in pygame.event.get():
         if event.type==locals.QUIT:
             exit()
+
+    #绘制画面
+    # 1.载入
+    background=pygame.image.load('bg.png')
+    right=pygame.image.load('right.png')
+    apple=pygame.image.load('apple.png')
+    # 2.渲染
+    screen.blit(background,(0,0))
+    screen.blit(right,(240,120))
+    screen.blit(apple,(360,300))
+    # 3.刷新
+    pygame.display.update()