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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 delete(self):

 """ Easy delete for db models """

        try:
            if self.exists() is False:
                return None
            self.db.session.delete(self)
            self.db.session.commit()
        except (Exception, BaseException) as error:
            # fail silently
            return None