uncloud-mravi/uncloud_etcd_based/uncloud/cli/main.py

#!/usr/bin/env python3

import argparse
import importlib

arg_parser = argparse.ArgumentParser('cli', add_help=False)
subparser = arg_parser.add_subparsers(dest='subcommand')

for component in ['user', 'host', 'image', 'network', 'vm']:
    module = importlib.import_module('uncloud.cli.{}'.format(component))
    parser = getattr(module, 'arg_parser')
    subparser.add_parser(name=parser.prog, parents=[parser])


def main(arguments):
    if not arguments['subcommand']:
        arg_parser.print_help()
    else:
        name = arguments.pop('subcommand')
        arguments.pop('debug')
        mod = importlib.import_module('uncloud.cli.{}'.format(name))
        _main = getattr(mod, 'main')
        _main(**arguments)