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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 next(self):
 """return one dict which contains "data" and "label" """

        if self.iter_next():
            self.data, self.label = self._read()
            return {self.data_name  :  self.data[0][1],
                    self.label_name :  self.label[0][1]}
        else:
            raise StopIteration