Python-сообщество

from django.db import models
from django.contrib.auth.models import User

class Profile(models.Model):
    GENDER_CHOICES = (
    ('M', u'Male'),
    ('F', u'Female'),
    )
    
    user = models.ForeignKey(User, unique=True)
    gender = models.CharField(max_length=1, choices=GENDER_CHOICES)
    birthday = models.DateField()
    city = models.ForeignKey('City', blank=True)
    friends = models.ManyToManyField('self', blank=True)
    ratio = models.IntegerField(default=0)
    
    def __unicode__(self):
        return self.user

class City(models.Model):
    name = models.CharField(max_length=255)
    region = models.ForeignKey('Region')
    
    def __unicode__(self):
        return '%s (%s)' % (self.name, self.region)

class Region(models.Model):
    name = models.CharField(max_length=200)
    
    def __unicode__(self):
        return self.name

    def __unicode__(self):
        return self.user

    def __unicode__(self):
        from django.utils.encoding import force_unicode
        return force_unicode(self.user)