def alpha_091(enddate, index='all'):
    """
    未实现
    公式:
        ((Ts_Rank(decay_linear(decay_linear(correlation(IndNeutralize(close, IndClass.industry), volume, 9.74928), 16.398), 3.83219), 4.8667) - rank(decay_linear(correlation(vwap, adv30, 4.01303), 2.6809)))\* -1)
    """
    raise Exception("该因子未实现")
未实现
公式:
((Ts_Rank(decay_linear(decay_linear(correlation(IndNeutralize(close, IndClass.industry), volume, 9.74928), 16.398), 3.83219), 4.8667) - rank(decay_linear(correlation(vwap, adv30, 4.01303), 2.6809)))\* -1)
jqdatasdk/alpha101.py