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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 __set_labels(self, labels):
 """ Add a label on the document. """

        with self.fs.open(self.fs.join(self.path, self.LABEL_FILE), 'w') \
                as file_desc:
            for label in labels:
                file_desc.write("%s,%s\n" % (label.name,
                                             label.get_color_str()))