save project

my_music.py

@@ -49,7 +49,6 @@ while True:
             if event.button == 1:
                 x,y=event.pos
                 if x>270 and x<370 and y>350 and y<450:
-                # 次数增加
                     click += 1
                     if click % 2 == 0:
                         play_button = stop_img
@@ -57,6 +56,14 @@ while True:
                     else:
                         play_button = play_img
                         pygame.mixer.music.pause()
+                if x>120 and x<220 and y>350 and y<400:
+                    num-= 1
+                    if num<0:
+                        num = len(music_list)-1
+                    pygame.mixer.music.load(path+"\\"+music_list[num])
+                    pygame.mixer.music.play()
+                    play_button = stop_img
+                    click = 0
 
     if pygame.mixer.music.get_busy() == False:
         num+=1