auto save

snake.py

@@ -52,13 +52,10 @@ while True:
         y -= 30
     else:
         y += 30
-    position.append((x,y))
     if x==apple_x and y==apple_y:
-        num1 = random(1,22)
-        num2=random(1,16)
-        apple_x=30*num1-30
-        apple_y=30*num2-30
-    else:
+        apple_x=random(0,660)
+        apple_y=random(0,480)
+    position.append((x, y))
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))