old_contents: from django.contrib.auth.models import User
  from django.db import models
  from django.db.models.signals import post_save
  from django.utils.encoding import python_2_unicode_compatible
  
  from libravatar import libravatar_url
  try:
      from urllib2 import urlparse
  except ImportError:
      from urllib import parse as urlparse
  from django.utils.http import urlquote
  
  from wafer.kv.models import KeyValue
  from wafer.talks.models import ACCEPTED, PENDING
  
  
  @python_2_unicode_compatible
  class UserProfile(models.Model):
      user = models.OneToOneField(User)
      kv = models.ManyToManyField(KeyValue)
      contact_number = models.CharField(max_length=16, null=True, blank=True)
      bio = models.TextField(null=True, blank=True)
  
      homepage = models.CharField(max_length=256, null=True, blank=True)
      # We should probably do social auth instead
      # And care about other code hosting sites...
      twitter_handle = models.CharField(max_length=15, null=True, blank=True)
      github_username = models.CharField(max_length=32, null=True, blank=True)
  
      def __str__(self):
          return u'%s' % self.user
  
      def accepted_talks(self):
          return self.user.talks.filter(status=ACCEPTED)
  
      def pending_talks(self):
          return self.user.talks.filter(status=PENDING)
  
      def avatar_url(self, size=96, https=True, default='mm'):
          if not self.user.email:
              return None
          return libravatar_url(self.user.email, size=size, https=https,
                                default=default)
  
      def homepage_url(self):
          """Try ensure we prepend http: to the url if there's nothing there
  
             This is to ensure we're not generating relative links in the
             user templates."""
          if not self.homepage:
              return self.homepage
          parsed = urlparse.urlparse(self.homepage)
          if parsed.scheme:
              return self.homepage
          # Vague sanity check
          abs_url = ''.join(['http://', self.homepage])
          if urlparse.urlparse(abs_url).scheme == 'http':
              return abs_url
          return self.homepage
  
      def display_name(self):
          return self.user.get_full_name() or self.user.username
  
  
  def create_user_profile(sender, instance, created, raw=False, **kwargs):
      if raw:
          return
      if created:
          UserProfile.objects.create(user=instance)
  
  post_save.connect(create_user_profile, sender=User)
  
new_contents: from django.contrib.auth.models import User
  from django.db import models
  from django.db.models.signals import post_save
  from django.utils.encoding import python_2_unicode_compatible
  
  from libravatar import libravatar_url
  try:
      from urllib2 import urlparse
  except ImportError:
      from urllib import parse as urlparse
  
  from wafer.kv.models import KeyValue
  from wafer.talks.models import ACCEPTED, PENDING
  
  
  @python_2_unicode_compatible
  class UserProfile(models.Model):
      user = models.OneToOneField(User)
      kv = models.ManyToManyField(KeyValue)
      contact_number = models.CharField(max_length=16, null=True, blank=True)
      bio = models.TextField(null=True, blank=True)
  
      homepage = models.CharField(max_length=256, null=True, blank=True)
      # We should probably do social auth instead
      # And care about other code hosting sites...
      twitter_handle = models.CharField(max_length=15, null=True, blank=True)
      github_username = models.CharField(max_length=32, null=True, blank=True)
  
      def __str__(self):
          return u'%s' % self.user
  
      def accepted_talks(self):
          return self.user.talks.filter(status=ACCEPTED)
  
      def pending_talks(self):
          return self.user.talks.filter(status=PENDING)
  
      def avatar_url(self, size=96, https=True, default='mm'):
          if not self.user.email:
              return None
          return libravatar_url(self.user.email, size=size, https=https,
                                default=default)
  
      def homepage_url(self):
          """Try ensure we prepend http: to the url if there's nothing there
  
             This is to ensure we're not generating relative links in the
             user templates."""
          if not self.homepage:
              return self.homepage
          parsed = urlparse.urlparse(self.homepage)
          if parsed.scheme:
              return self.homepage
          # Vague sanity check
          abs_url = ''.join(['http://', self.homepage])
          if urlparse.urlparse(abs_url).scheme == 'http':
              return abs_url
          return self.homepage
  
      def display_name(self):
          return self.user.get_full_name() or self.user.username
  
  
  def create_user_profile(sender, instance, created, raw=False, **kwargs):
      if raw:
          return
      if created:
          UserProfile.objects.create(user=instance)
  
  post_save.connect(create_user_profile, sender=User)
  
subject: Remove unused import