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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 zipWithUniqueId(self):
 """ Zips this RDD with generated unique Long ids. n is the number of partitions. So there may exist gaps, but this method won't trigger a spark job, which is different from L{zipWithIndex} [('a', 0), ('b', 1), ('c', 4), ('d', 2), ('e', 5)] """

        n = self.getNumPartitions()

        def func(k, it):
            for i, v in enumerate(it):
                yield v, i * n + k

        return self.mapPartitionsWithIndex(func)