old_contents: from django.db import models
  
  BEER_CHOICES = (
      (1, 'Domestic'),
      (2, 'Import'),
  )
  
  class Beer(models.Model):
      name = models.CharField(max_length=200)
      slug = models.SlugField(unique=True)
      brewery = models.ForeignKey('Brewery')
      locality = models.IntegerField(choices=BEER_CHOICES)
      description = models.TextField(blank=True)
      
      def __unicode__(self):
          return self.name
          
  
  class Brewery(models.Model):
      name = models.CharField(max_length=200)
      slug = models.SlugField(unique=True)
      description = models.TextField(blank=True)
      
      def __unicode__(self):
          return self.name
new_contents: from django.db import models
  
  BEER_CHOICES = (
      (1, 'Domestic'),
      (2, 'Import'),
  )
  
  class Beer(models.Model):
      name = models.CharField(max_length=200)
      slug = models.SlugField(unique=True)
      brewery = models.ForeignKey('Brewery')
      locality = models.IntegerField(choices=BEER_CHOICES)
      description = models.TextField(blank=True)
      
      def __unicode__(self):
          return self.name
          
  
  class Brewery(models.Model):
      name = models.CharField(max_length=200)
      slug = models.SlugField(unique=True)
      description = models.TextField(blank=True)
      
      def __str__(self):
          return self.name
subject: Change the __unicode__ to __str__