def bookDF(symbol, token='', version=''):
    '''Book data

    https://iextrading.com/developer/docs/#book
    realtime during Investors Exchange market hours

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

    Returns:
        DataFrame: result
    '''
    x = book(symbol, token, version)
    df = _bookToDF(x)
    return df
def bookDF(symbol, token='', version=''):
    '''Book data

    https://iextrading.com/developer/docs/#book
    realtime during Investors Exchange market hours

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

    Returns:
        DataFrame: result
    '''
    x = book(symbol, token, version)
    df = _bookToDF(x)
    return df
def bookDF ( symbol , token = '' , version = '' ) : x = book ( symbol , token , version ) df = _bookToDF ( x ) return df
Book data

    https://iextrading.com/developer/docs/#book
    realtime during Investors Exchange market hours

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

    Returns:
        DataFrame: result
Book data