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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 dep_save(self, ):
 """Save the current department :returns: None :rtype: None :raises: None """

        if not self.cur_dep:
            return
        ordervalue = self.dep_ordervalue_sb.value()
        desc = self.dep_desc_pte.toPlainText()
        self.cur_dep.ordervalue = ordervalue
        self.cur_dep.description = desc
        self.cur_dep.save()