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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 modified(self):
 """ Whether the map has staged local modifications. """

        if self._removes:
            return True
        for v in self._value:
            if self._value[v].modified:
                return True
        for v in self._updates:
            if self._updates[v].modified:
                return True
        return False