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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 addDataset(self):
 """ Adds a new dataset into this repo. """

        self._openRepo()
        dataset = datasets.Dataset(self._args.datasetName)
        dataset.setDescription(self._args.description)
        dataset.setAttributes(json.loads(self._args.attributes))
        self._updateRepo(self._repo.insertDataset, dataset)