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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def aggregateByKey(self, zeroValue, seqFunc, combFunc, numPartitions=None, partitionFunc=portable_hash):
 """ Aggregate the values of each key, using given combine functions and a neutral "zero value". This function can return a different result type, U, than the type of the values in this RDD, V. Thus, we need one operation for merging a V into a U and one operation for merging two U's, The former operation is used for merging values within a partition, and the latter is used for merging values between partitions. To avoid memory allocation, both of these functions are allowed to modify and return their first argument instead of creating a new U. """

        def createZero():
            return copy.deepcopy(zeroValue)

        return self.combineByKey(
            lambda v: seqFunc(createZero(), v), seqFunc, combFunc, numPartitions, partitionFunc)