def combiner(self, key, values):
        raise NotImplementedError
If any of these arguments (except optimizer) is not None, it overrides
dataset/ETHPy150Open Yelp/mrjob/mrjob/job.py/MRJob.combiner--crossover with--dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/compile/debugmode.py/DebugMode.__init__