import unicodedata


def cleanString(astring: str):
    """Convert a string to a ascii human-readable string

    :param astring: string
    :return: string
    """
    cleanname = str(unicodedata.normalize('NFKD', astring)
                    .encode('ASCII', 'ignore')
                    .decode("ASCII"))
    cleanname = ''.join(e for e in cleanname if e.isalnum())
    return cleanname.lower()