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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 set_or_create(self, path, *args, **kwargs):
 """Sets the data of a node at the given path, or creates it."""


        d = self.set(path, *args, **kwargs)

        @d.addErrback
        def _error(result):
            return self.create(path, *args, **kwargs)

        return d