tdx_formula.py 文件源码

def CROSS(self, param):
        if not isinstance(param[0], pd.core.series.Series) and not isinstance(param[1], pd.core.series.Series):
            print('Invalid data type is detected.')
            return False

        if not isinstance(param[0], pd.core.series.Series):
            x1 = param[0]
            x2 = param[0]
            y1 = param[1].shift(1)
            y2 = param[1]

        if not isinstance(param[1], pd.core.series.Series):
            x1 = param[0].shift(1)
            x2 = param[0]
            y1 = param[1]
            y2 = param[1]

        if isinstance(param[0], pd.core.series.Series) and isinstance(param[1], pd.core.series.Series):
            x1 = param[0].shift(1)
            x2 = param[0]
            y1 = param[1].shift(1)
            y2 = param[1]

        return (x1 <= y1) & (x2 > y2)