def handle_enter_queue(self, user_id):
    if (user_id in self.queue):
        print(f'tried adding {user_id} to queue but they are already in it')
        return
    self.queue.append(user_id)
    print(f'{user_id} has joined the queue')
def handle_enter_queue(self, user_id):
    if (user_id in self.queue):
        print(f'tried adding {user_id} to queue but they are already in it')
        return
    self.queue.append(user_id)
    print(f'{user_id} has joined the queue')