auto save

snake.py

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