new_contents: from django.core.management.base import BaseCommand
  from datasets.models import User
  
  
  class Command(BaseCommand):
      help = 'Transfer the votes of an user to another' \
             'Usage: python manage.py transfer_user_votes <from_username> <to_username>'
  
      def add_arguments(self, parser):
          parser.add_argument('from_username', type=str)
          parser.add_argument('to_username', type=str)
  
      def handle(self, *args, **options):
          from_username = options['from_username']
          to_username = options['to_username']
          from_user = User.objects.get(username=from_username)
          to_user = User.objects.get(username=to_username)
  
          for vote in from_user.votes.all():
              vote.created_by = to_user
              vote.save()
  
subject: Add command transfer user votes