请问Django1.5 自定义User模块在做执行syncdb操作时遇到类型错误问题，django1.5syncdb,django1.5 自定

请问Django1.5 自定义User模块在做执行syncdb操作时遇到类型错误问题，django1.5syncdb,django1.5 自定

django1.5 自定义User模块后执行 syncdb 总是报错 TypeError: create_superuser() takes exactly 4 arguments (3 given)

源码如下：

# coding: utf8from django.db import modelsfrom django.contrib.auth.models import BaseUserManager, AbstractBaseUser# Create your models here.class PassportManager(BaseUserManager):    def create_user(self, email, alias, password=None):        # create_user()参数必须是USERNAME_FIELD 和 所有的REQUIRED_FIELD         if not email:            raise ValueError('用户必须输入Email地址')        user = self.model(            email = PassportManager.normalize_email(email),            alias = alias,            # is_staff = False,            # is_active = True,            # is_superuser = False            )        user.set_password(password)        user.save(using = self._db)        return user    def create_superuser(self, email, alias, password):        # 创建超级用户，一般来说可以直接调用create_user方法，然后设置管理员相关属性,           user = self.create_user(            email = email,            alias = alias,            password = password            )        user.is_admin = True        # is_admin = True 等同于以下:        # user.is_staff = True        # user.is_active = True        # user.is_superuser = True        user.save(using = self._db)        return userclass Passport(AbstractBaseUser):    email = models.EmailField(max_length=254, unique=True, db_index=True)    alias = models.CharField(max_length=60)    is_active = models.BooleanField('active', default=True)    is_admin = models.BooleanField('staff status', default=False, help_text='flag for log into admin site.')    avatar = models.ImageField(upload_to='avatar', max_length=255)    bio = models.CharField(max_length=255)    GENRE_CHOICES = (        (1, '摄影师'),        (2, '插画师'),        (3, '原画师'),        (4, '平面设计师'),        (5, '品牌顾问'),        (6, '其他'),        )    genre = models.SmallIntegerField(choices=GENRE_CHOICES)    site_dribbble = models.URLField(blank=True, verbose_name=u'Dribbble')    site_deviantart = models.URLField(blank=True, verbose_name=u'DeviantART')    site_benhance = models.URLField(blank=True, verbose_name=u'Benhance')    site_tumblr = models.URLField(blank=True, verbose_name=u'Tumblr')    site_zcool = models.URLField(blank=True, verbose_name=u'站酷')    site_blog = models.URLField(blank=True, verbose_name=u'博客')    site_sina = models.URLField(blank=True, verbose_name=u'新浪微博')    # 用于登录的字段    USERNAME_FIELD = 'email'    # REQUIRED_FIELDS must contain all required fields on your User model,     # but should not contain the USERNAME_FIELD or password as these fields     # will always be prompted for.    REQUIRED_FIELD = ['alias']    objects = PassportManager()    def get_full_name(self):        return self.alias    def get_short_name(self):        return self.alias    def __unicode__(self):        return self.alias    @property    def is_staff(self):        # Is the user a member of staff?        # Simplest possible answer: All admins are staff        return self.is_admin

Google 上有一些提问，但是好像全部都是集中在 REQUIRED_FIELD = ['']的问题，然后我逐一检查了下，以我的理解应该是没有问题的了...

http://python.6.x6.nabble.com/Syncdb-error-with-new-1-5rc1-td5001568.html
https://groups.google.com/d/topic/django-users/RnPEUEAvvE0

编橙之家文章，