code: def BROADCAST_FILTER_OTHERS(user):
          
          if not isinstance(user, (set,frozenset,list,tuple)):
              user = (user,)
          return lambda u, command, *args, **kwargs: u not in user
docs: HIGH-ORDER (pass it as IBroadcast.BROADCAST_FILTER_OTHERS(user-or-sequence))
          Criteria to broadcast to every user but the current(s).