def loadValidSet(self, valid_data_package):
        raise NotImplementedError("Override this function.")
Use Popen to execute `seq` and return stdout.
dataset/ETHPy150Open yuhaozhang/nnjm-global/code/train_util.py/TrainModel.loadValidSet--crossover with--dataset/ETHPy150Open peterbe/bgg/bgg/lib/makediff.py/call