django QuerySet オブジェクトを辞書オブジェクトに変換する

>>> from django.contrib.auth.models import User  
>>> from django.forms.models import model_to_dict  
>>> u = User.objects.get(id=1)  
>>> u_dict = model_to_dict(u)  
>>> type(u)  
<class 'django.contrib.auth.models.User'>  
>>> type(u_dict)  
<type 'dict'>