以下是我的模型：
我有两张桌子match和team：
class Match(DictModel):
date_time = db.DateTimeProperty()
team1 = db.StringProperty()
team2 = db.StringProperty()
venue = db.StringProperty()
result = db.IntegerProperty()
class Team(DictModel):
tslug = db.StringProperty()
name = db.StringProperty()
matches_played = db.IntegerProperty()
matches_won = db.IntegerProperty()
rating = db.FloatProperty()
在运行时，当向其中一个处理程序函数发出发布请求时，我想动态地将团队评级与查询集关联Match并发送值，这就是我尝试做的事情：
matches = Match.all()
matches.filter('date_time <=', end)
matches.filter('date_time >=', start)
match_dict = functs.create_dict(matches)
self.response.out.write(match_dict)
我有一个自定义函数来获取当前团队的评分，如下所示：
def to_dict(self):
return dict([(p, unicode(getattr(self, p))) for p in self.properties()])
def create_dict(matches):
lst = []
for m in matches:
t1 = m.team1
t2 = m.team2
te1 = Team.all().filter("name =", t1).get()
te2 = Team.all().filter("name =", t2).get()
m.setattr('rating1', te1.rating)
m.setattr('rating2', te2.rating)
lst.append(m)
data_dict = json.dumps([l.to_dict() for l in lst])
return data_dict
麻烦：我得到错误setattr代替setattr我也尝试过m.rating1 = te1，m.rating2 = te2但即使这样似乎也不起作用。其他一切都完美无缺。
请帮忙谢谢！