def __str__(self):
        return "NoOpPacket"
Calculate derived feature's values based on the values in the input data frame.
dataset/ETHPy150Open dropbox/emmer/emmer/packets.py/NoOpPacket.__str__--crossover with--dataset/ETHPy150Open alex-pirozhenko/sklearn-pmml/sklearn_pmml/convert/features.py/DerivedFeature.apply