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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 unsubscribe(self, email, id):
 """ Turn off email notifications for replies to this comment. """

        self.db.execute([
            'UPDATE comments SET',
            '    notification=0',
            'WHERE email=? AND (id=? OR parent=?);'], (email, id, id))