save project

my_music.py

@@ -40,7 +40,14 @@ while True:
                 if volume < 0:
                     volume = 0
                 pygame.mixer.music.set_volume(volume)
-
+            if x > 420 and x <520 and y >350 and y <480 :
+               num = +1
+               if num >   len(music_list)-1:
+                   num = 0
+                pygame.mixer.music.load(path+"\\"+music_list[num])
+                pygame.mixer.music.play()
+                play_button = stop_img
+                click = 0 
         # 按下鼠标
         if event.type == locals.MOUSEBUTTONDOWN:
             if event.button == 1:
@@ -54,7 +61,7 @@ while True:
                     else:
                         play_button = play_img
                         pygame.mixer.music.pause()
-                if x >120 and x <220 and y >350  and y ><400:
+                if x >120 and x <220 and y >350  and y < 400:
                     num -=1
                     if num < 0:
                         num = len(music_list)-1