new_contents: from django.core.management.base import BaseCommand
  from django.contrib.auth.models import User
  
  class Command(BaseCommand):
      help = 'Closes the specified poll for voting'
  
      def add_arguments(self, parser):
          parser.add_argument('username', nargs='+', type=str)
  
      def handle(self, *args, **options):
          for username in options['username']:
              User.objects.create_superuser(username, username + '@example.com', '123')
              self.stdout.write(self.style.SUCCESS('Add superuser "%s", password: 123' % username))
subject: create addroot command