auto save

snake.py

@@ -58,8 +58,10 @@ while True:
 
     position.append((x, y))
     if x == apple_x and y == apple_y:
-        apple_x = random.randint(0,660)
-        apple_y = random.randint(0,480)
+        if random.randint(0,660)%30 == 0:
+            apple_x = random.randint(0,660)
+        if random.randint(0,480)%30 == 0:
+            apple_y = random.randint(0,480)
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))