save project

my_music.py

@@ -62,19 +62,19 @@ while True:
                 if x > 120 and x < 220 and y > 350 and y < 400:
                     num -= 1
                     if num < 0:
-                        num = len[music_list]-1
+                        num = len(music_list)-1
                     pygame.mixer.music.load(path+"//"+filelist[num])
                     pygame.mixer.music.play()
                     click = 0
                     play_button = stop_img
                 if x > 420 and x < 520 and y > 350 and y < 400:
                     num += 1
-                    if num < 4:
-                        num = len[music_list]+1
+                    if num > 4:
+                        num = 0
                     pygame.mixer.music.load(path+"//"+filelist[num])
                     pygame.mixer.music.play()
                     click = 0
-                    play_button = play_img
+                    play_button = stop_img