def exchangesDF(token='<STR_LIT>', version='<STR_LIT>'):
return pd.DataFrame(exchanges())<EOL>
Returns an array of U.S. exchanges.

    https://iexcloud.io/docs/api/#u-s-exchanges
    8am, 9am, 12pm, 1pm UTC daily

    Args:
        token (string); Access token
        version (string); API version

    Returns:
        DataFrame: result