Trying to do simple subcommands in python

main.py

#!/usr/bin/env python3
import argparse


class Command(object):
    name = None
    aliases = []
    description = None

    @classmethod
    def init_with_subparsers(cls, subparser):
        parser = subparser.add_parser(cls.name, aliases=cls.aliases, help=cls.description)
        parser.set_defaults(func=cls)

        return parser


class ListCommand(Command):
    name = 'list'
    aliases = ['ls']

    def __init__(self, args):
        print("received list!")
        print(args)

    @classmethod
    def init_with_subparsers(cls, sub):
        super().init_with_subparsers(sub)

        parser.add_argument('--dir', '-d', help="Hello!")


parser = argparse.ArgumentParser(description="Subcommands!")
subparsers = parser.add_subparsers()

ListCommand.init_with_subparsers(subparsers)


args = parser.parse_args(['ls'])

args.func(args)