save project

my_music.py

@@ -54,6 +54,10 @@ while True:
                         pygame.mixer.music.pause()
 
     if pygame.mixer.music.get_busy() == False:
+        num += 1
+        if num > len(music_list)-1:
+            num = 0
+        pygame.mixer.music.load(music_list[num])    
         pygame.mixer.music.play()
 
     # 绘制画面