def internationalSymbolsList(region='<STR_LIT>', exchange='<STR_LIT>', token='<STR_LIT>', version='<STR_LIT>'):
return internationalSymbolsDF(region, exchange, token, version).index.tolist()<EOL>
This call returns an array of international symbols that IEX Cloud supports for API calls.

    https://iexcloud.io/docs/api/#international-symbols
    8am, 9am, 12pm, 1pm UTC daily

    Args:
        region (string); region, 2 letter case insensitive string of country codes using ISO 3166-1 alpha-2
        exchange (string): Case insensitive string of Exchange using IEX Supported Exchanges list
        token (string); Access token
        version (string); API version

    Returns:
        list: result