Swap characters from script to transliterated version and vice versa.
    Optionally sanitize string by using preprocess function.

    :param sanitize:
    :param string:
    :return:

def convert(string, sanitize=False):
    """
    Swap characters from script to transliterated version and vice versa.
    Optionally sanitize string by using preprocess function.

    :param sanitize:
    :param string:
    :return:
    """
    return r.convert(string, (preprocess if sanitize else False))