Method to parse command line arguments

def _parse_args(cls):
        """
        Method to parse command line arguments
        """
        cls.parser = argparse.ArgumentParser()
        cls.parser.add_argument(
            "symbol", help="Symbol for horizontal line", nargs="*")
        cls.parser.add_argument(
            "--color", "-c", help="Color of the line", default=None, nargs=1)
        cls.parser.add_argument(
            "--version", "-v", action="version", version="0.13")

        return cls.parser