Unnamed

from django.db import modelsimport datetimeclass Season(models.Model):    name = models.CharField('season name', maxlength=255)    slug = models.SlugField(prepopulate_from=("name",), help_text='Automatically created from headline.')        def __str__(self):        return self.name        class Admin:        pass        class Sport(models.Model):    name = models.CharField(maxlength=255)    slug = models.SlugField(        'Slug', prepopulate_from=("name",),        help_text='Automatically created from name.',    )        def __str__(self):        return self.name        class Admin:        fields = (            ('Sport Information', {'fields': ('name', 'slug')}),        )        ordering = ('name',)                class Game(models.Model):    season = models.ForeignKey(Season)    sport = models.ForeignKey(Sport)    opponent = models.CharField(maxlength=255, core=True)    detail = models.CharField(maxlength=255, blank=True)    datetime = models.DateTimeField(core=True)    statsurl = models.CharField(maxlength=255, blank=True)    location = models.CharField(maxlength=255, core=True)    home_score = models.IntegerField(null=True, blank=True)    visitor_score = models.IntegerField(null=True, blank=True)        def __str__(self):        return self.opponent        class Admin:        fields = (            ('Sport Information', {'fields': ('season', 'sport',)}),            ('Game Information', {'fields': ('opponent', 'detail', 'datetime', 'statsurl', 'location', 'home_score', 'visitor_score',)}),        )        list_display = ('opponent', 'season', 'sport', 'datetime')        list_filter = ['sport', 'season', 'opponent']        date_hierarchy = 'datetime'        ordering = ('-datetime',)