如何把auth模块中的User扩展产生上下级关系？

我新建了 一个model是这样写的，老是报错。
from django.contrib.auth.models import User
class UserRelation(models.Model):
    User = models.ForeignKey(User)
    Superior = models.ForeignKey(User)

-- 
#~~~~
class khsing:
    def __init__(self):
        self.name='Gawain Bai'
        self.blog='http://blog.khsing.net'
        self.home='Jail'
#coding... ...

¶à¸öFKÖ¸Ïòͬһ¸ö±íÓ¦¸ÃÒªÖƶ¨Ò»¸öÃû×Ö°É

On Jan 13, 2008 7:18 PM, Gawain Bai <wike1985在gmail.com> wrote:

> ÈçºÎ°ÑauthÄ£¿éÖеÄUserÀ©Õ¹²úÉúÉÏϼ¶¹Øϵ£¿
>
> ÎÒн¨ÁË Ò»¸ömodelÊÇÕâÑùдµÄ£¬ÀÏÊDZ¨´í¡£
> from django.contrib.auth.models import User
> class UserRelation(models.Model):
>    User = models.ForeignKey(User)
>    Superior = models.ForeignKey(User)
>
> --
> #~~~~
> class khsing:
>    def __init__(self):
>        self.name='Gawain Bai'
>        self.blog='http://blog.khsing.net'
>        self.home='Jail'
> #coding... ...
> _______________________________________________
> python-chinese
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ÒªÖ¸Ã÷related name

On 1/13/08, @@ <askfor在gmail.com> wrote:
>
> ¶à¸öFKÖ¸Ïòͬһ¸ö±íÓ¦¸ÃÒªÖƶ¨Ò»¸öÃû×Ö°É
>
> On Jan 13, 2008 7:18 PM, Gawain Bai <wike1985在gmail.com> wrote:
>
> > ÈçºÎ°ÑauthÄ£¿éÖеÄUserÀ©Õ¹²úÉúÉÏϼ¶¹Øϵ£¿
> >
> > ÎÒн¨ÁË Ò»¸ömodelÊÇÕâÑùдµÄ£¬ÀÏÊDZ¨´í¡£
> > from django.contrib.auth.models import User
> > class UserRelation(models.Model):
> >    User = models.ForeignKey(User)
> >    Superior = models.ForeignKey(User)
> >
> > --
> > #~~~~
> > class khsing:
> >    def __init__(self):
> >        self.name='Gawain Bai'
> >         self.blog='http://blog.khsing.net'
> >        self.home='Jail'
> > #coding... ...
> > _______________________________________________
> > python-chinese
> > Post: send python-chinese在lists.python.cn
> > Subscribe: send subscribe to python-chinese-request在lists.python.cn
> > Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> > Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
>
>
> _______________________________________________
> python-chinese
> Post: send python-chinese在lists.python.cn
> Subscribe: send subscribe to python-chinese-request在lists.python.cn
> Unsubscribe: send unsubscribe to  python-chinese-request在lists.python.cn
> Detail Info: http://python.cn/mailman/listinfo/python-chinese
>
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