def lastDF(symbols=None, token='<STR_LIT>', version='<STR_LIT>'):
df = pd.io.json.json_normalize(last(symbols, token, version))<EOL>_toDatetime(df)<EOL>_reindex(df, '<STR_LIT>')<EOL>return df<EOL>
Last provides trade data for executions on IEX. It is a near real time, intraday API that provides IEX last sale price, size and time.
    Last is ideal for developers that need a lightweight stock quote.

    https://iexcloud.io/docs/api/#last

    Args:
        symbol (string); Ticker to request
        token (string); Access token
        version (string); API version

    Returns:
        DataFrame: result