__init__.py 文件源码

def formatter_factory(show_defaults=True):
    """Formatter factory"""
    def get_help_string(self, action):
        lhelp = action.help
        if isinstance(show_defaults, (list, tuple)):
            if "-" + action.dest in show_defaults:
                return lhelp
        if '%(default)' not in action.help:
            if action.default is not argparse.SUPPRESS:
                defaulting_nargs = [argparse.OPTIONAL, argparse.ZERO_OR_MORE]
                if action.option_strings or action.nargs in defaulting_nargs:
                    lhelp += ' (default: %(default)s)'
        return lhelp

    def default_help_string(self, action):
        return action.help
    if show_defaults is True:
        ARPIFormatter._get_help_string = classmethod(get_help_string)
    else:
        ARPIFormatter._get_help_string = classmethod(default_help_string)
    return ARPIFormatter