auto save

snake.py

@@ -56,8 +56,8 @@ while True:
     position.pop(0)
     # 将背景图画上去
     if x ==apple_x and y == apple_y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
+        apple_x=random.randint(0,630)
+        apple_y=random.randint(0,450)
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去