def get_label(self, part_number):
        if not validate(part_number, 'partNumber'):
            raise ValueError("%s is not a valid part number" % part_number)

        self.partNumber = part_number
        self._submit("ReturnLabelRequest", "ReturnLabel", "returnLabelData")
        return self._req.objects
The Return Label API retrieves the Return Label for a given Return Order Number.
dataset/ETHPy150Open filipp/py-gsxws/gsxws/returns.py/Return.get_label