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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 slice(self, begin, end):
 """Filter RDDs to between begin and end. :param datetime.datetime|int begin: datetiem or unix timestamp :param datetime.datetime|int end: datetiem or unix timestamp :rtype: DStream """

        return self.transform(lambda time_, rdd:
                              rdd if begin <= time_ <= end
                              else EmptyRDD(self._context._context))