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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 identical(self, o):
 """ Used to make exact comparisons between two ValueSets. :param o: The other ValueSet to compare with. :return: True if they are exactly same, False otherwise. """

        if self._reversed != o._reversed:
            return False

        for region, si in self.regions.items():
            if region in o.regions:
                o_si = o.regions[region]
                if not si.identical(o_si):
                    return False
            else:
                return False

        return True