auto save

my_music.py

@@ -77,7 +77,7 @@ while True:
                 if x > 120 and x < 220 and y > 350 and y < 400:
                     num -= 1
                     if num < 0:
-                        num = len(filelist) - 1
+                        num = len(music_list) - 1
                     pygame.mixer.music.load(path +"\\"+ music_list[num])
                     pygame.mixer.music.play()
                     play_button = stop_img
@@ -100,6 +100,7 @@ while True:
         music1 = pygame.mixer.Sound(path +"\\"+ music_list[num])
         #获取音乐长度，以秒为单位
         music_length = int(music1.get_length())
+
     #歌曲播放进度时间
     play_time = pygame.mixer.music.get_pos()
     #展示秒数的换算