from django.core.management.base import BaseCommand

class Command(BaseCommand):

    def add_arguments(self, parser):

        subparsers_1 = parser.add_subparsers(dest="subcommand_1")

        parser_foo_1 = subparsers_1.add_parser("foo_1")

        subparsers_2 = parser_foo_1.add_subparsers(dest="subcommand_2")

        parser_foo_2 = subparsers_2.add_parser("foo_2")

        parser_foo_2.add_argument("--bar", required=True)

    def handle(self, *args, **options):

        self.stdout.write(",".join(options))