game model

class Game(models.Model):

    def __init__(self, *args, **kwargs):
        super(Game, self).__init__(*args, **kwargs)
        #Non-django-ORM instance variables
        self.question_bank = []
        self.answer_bank = []
        self.object_id_list = []
        self.qi = 0 # Question iterator
        self.max_questions = 10
        self.player_list = []
        self.question_started = None

    GAME_CHOICES = (
        ('solo', 'Trivia Solo'),
        ('rtt', 'Real-Time Trivia'),
        ('rtd', 'Real-Time Deathmatch'),
        ('mtb', 'Multiplayer Turn-Based'),
    )
    category = models.ForeignKey('Category')
    maxPlayers = models.IntegerField()
    gameType = models.CharField("Game Type", max_length=255, choices=GAME_CHOICES)
    started = models.DateTimeField(auto_now_add=True)
    finished = models.DateTimeField(default=None, null=True)
    players = models.ManyToManyField(User, through="Player")

    def __unicode__(self):
        return str(self.id) + " | " + self.gameType + " | " + self.category.categoryName + " | " + str(self.started)

    def get_questions(self):
        if len(self.object_id_list) != 0:
            self.question_bank.append(Question.objects.filter(category__categoryName=self.category.categoryName).exclude(id__in=self.object_id_list).order_by('?')[:10])
        else:
            self.question_bank = Question.objects.filter(category__id=self.category.id).order_by('?')[:10]

        for q in self.question_bank:
            self.object_id_list.append(q.id)

    def update_player_list(self):
        player_list = []
        the_players = self.players.all()
        player_number = 1
        for player in the_players:
            single_player = player.player_set.get(game__id__exact=self.id)
            #single_player.player_number = player_number
            player_list.append(single_player)
            player_number += 1
        self.player_list = player_list

    def get_username_list(self):
        username_arr = []
        for player in self.player_list:
            tmp_obj = {}
            tmp_obj['name'] = player.base_user.username
            tmp_obj['number'] = player.player_number
            username_arr.append(tmp_obj)
        return username_arr