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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 add_definitions(self, data, namespace, relative=True):
 """Add new topological definitions to ``self.topology``. If ``relative`` is true, then ``data`` is defined relative to the existing locations already in ``self.topology``, e.g. IMAGE: .. code-block:: python {"Russia Region": [ "AM", "AZ", "GE", "RU" ]} Otherwise, ``data`` is a dictionary with string keys and values of integer topology face id sets: .. code-block:: python { 'A': {1, 2, 3}, 'B': {2, 3, 4}, } """

        if not relative:
            self.topology.update({(namespace, k): v for k, v in data.items()})
            self.faces.update(set.union(*data.values()))
        else:
            self.topology.update({
                (namespace, k): set.union(*[self[o] for o in v])
                for k, v in data.items()
            })