Command line tool to run arbitrary function about defopt HOT 5 CLOSED

def main(argv=None):
    argv = sys.argv[1:] if argv is None else argv
    outer_argv = argv[:1]
    inner_argv = argv[1:]

    def defopt(path: str="", *args):
        """
        run any suitably documented function from the command-line

        Args:
            path: the absolute, python-style (dot-notation) path to a callable object
            args (List[str]): arguments to be passed to the callable specified by path
        """
        # NOTE: *args is not actually used directly, it's just added so the documentation
        #       reflects the intended interface
        inner = import_object(path)
        run(inner, argv=inner_argv)

    run(defopt, argv=outer_argv)

def import_object(path, _full_path=None):
    """
    Import an object from a python dot-notation path. Similar to import_module
    from importlib, but allows the path to contain objects other than packages,
    modules, and classes.

    Args:
        path (str): The absolute python-style path to an object

    Returns: the object

    Examples:
        >>> import_object("string.digits")
        '0123456789'

        >>> import_object("string.digits.__class__.__name__.upper")()
        'STR'

        >>> import_object("round")(1.234, 2)
        1.23
    """
    if (not _full_path) and ("." not in path):
        return globals().get(path, import_object("builtins." + path, path))
    _full_path = _full_path or path
    try:
        mod_path, name = path.rsplit('.', 1)
    except ValueError as e:
        raise ValueError("%r is not a valid object path" % _full_path) from e
    try:
        mod = importlib.import_module(mod_path)
    except ImportError:
        mod = import_object(mod_path, _full_path)  # allow for nested objects
    return getattr(mod, name)

if __name__ == "__main__":
    main()