cli.py 文件源码

def __call__(self, parser, namespace, values, option_string=None):
        renew_hook_set = namespace.deploy_hook != namespace.renew_hook
        if renew_hook_set and namespace.renew_hook != values:
            raise argparse.ArgumentError(
                self, "conflicts with --renew-hook value")
        namespace.deploy_hook = namespace.renew_hook = values