def on_cleanup_error(function, path, excinfo):
                click.secho("warning: failed to remove file or directory: {}\n"
                            "please delete it manually.".format(path),
                            fg="red")
def __init__(self, choices=None, optional=False):
        super().__init__(
            minimum=0, maximum=2 ** 16 - 1, choices=choices, optional=optional
        )