save project

snake.py

@@ -61,7 +61,7 @@ while True:
         AY=random.randint(0,16)
         apple_x = AX*30-30
         apple_y = AY*30-30
-    else
+    else:
         position.append((x, y))
     position.pop(0)
     # 将背景图画上去