save project

my_music.py

@@ -60,6 +60,14 @@ while True:
                         pygame.mixer.music.pause()
                         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 = num - 1        
+                    if num <0 :
+                        num = len(gequ) - 1
+                    pygame.mixer.music.load(gequ[num])  # 载入音乐 
+                    pygame.mixer.music.play()
+                    click = 0
+                    play_button = stop_img
+                if x>420 and x<520 and y>350 and y<400:
                     num = num + 1        
                     num = num + 1        
                     if num > len(gequ) - 1 :
                     if num > len(gequ) - 1 :
                         num = 0
                         num = 0