def example_function_with_default_args(
    positional_arg: int, default_arg: str = "optional"
) -> str:
    """Return a string that tells what args you passed in.
    Args:
        positional_arg: any number to print
        default_arg:    any string to print

    Returns:
        A success message that includes the given arguments.
    """
    return f"success! args: {positional_arg}, {default_arg}"