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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 rename(self, new_name):
 """ Rename this collection """

        new_collection = Collection(self.db, new_name, create=False)
        assert not new_collection.exists()

        self.db.execute("alter table %s rename to %s" % (self.name, new_name))
        self.name = new_name