- def volume_print(self, music = None, value = 100, **kwargs):
- if music is not None:
- return "setting volume of « {} » to {}%".format(music.name, value)
+ def volume_print(self, music = None, value = 100, add = False, **kwargs):
+ if add:
+ if music is not None:
+ return "{:+d}% to volume of « {} »".format(value, music.name)
+ else:
+ return "{:+d}% to volume".format(value)