def alpha_048(enddate, index='all'):
    """
    未实现
    公式:
        (indneutralize(((correlation(delta(close, 1), delta(delay(close, 1), 1), 250)\* delta(close, 1)) / close), IndClass.subindustry) / sum(((delta(close, 1) / delay(close, 1))^2), 250))
    """
    raise Exception("该因子未实现")
未实现
公式:
(indneutralize(((correlation(delta(close, 1), delta(delay(close, 1), 1), 250)\* delta(close, 1)) / close), IndClass.subindustry) / sum(((delta(close, 1) / delay(close, 1))^2), 250))
jqdatasdk/alpha101.py