__init__.py 文件源码

def get_subparsers(parser):
    '''get_subparser will get a dictionary of subparsers, to help with printing help
    '''

    actions = [action for action in parser._actions 
               if isinstance(action, argparse._SubParsersAction)]

    subparsers = dict()
    for action in actions:
        # get all subparsers and print help
        for choice, subparser in action.choices.items():
            subparsers[choice] = subparser

    return subparsers