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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 union(self):
 """Return the union of all flags in this dict Returns ------- union : `DataQualityFlag` a new `DataQualityFlag` who's active and known segments are the union of those of the values of this dict """

        usegs = reduce(operator.or_, self.values())
        usegs.name = ' | '.join(self.keys())
        return usegs