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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 output(self):
 """ Returns the target output for this task. In this case, a successful execution of this task will create a file in HDFS. :return: the target output for this task. :rtype: object (:py:class:`~luigi.target.Target`) """

        return luigi.contrib.hdfs.HdfsTarget('data-matrix', format=luigi.format.Gzip)