docs: def display_user(value, arg):
      ''' Return 'You' if value is equal to arg.
          Parameters:
              value should be a userprofile
              arg should be another user.
          Ideally, value should be a userprofile from an object and arg the user logged in.
      '''
      if value.user == arg and arg.username != ANONYMOUS_USERNAME:
          return "You"
      else:
          return value.user.get_full_name()