save project

my_music.py

@@ -44,7 +44,9 @@ while True:
                         play_button=play_img
     if pygame.mixer.music.get_busy() == False:
         num += 1
-        if num
+        if num>len(music_list)-1:
+            num=0
+        pygame.mixer.music.load(music_list[num])
         pygame.mixer.music.play()
     # 绘制画面
     screen.blit(bg_img, (0, 0))      # 填充背景