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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 reset(self):
 """Reset the tough connection. If a reset is not possible, tries to reopen the connection. It will not complain if the connection is already closed. """

        try:
            self._con.reset()
            self._transaction = False
            self._setsession()
            self._usage = 0
        except Exception:
            try:
                self.reopen()
            except Exception:
                try:
                    self.rollback()
                except Exception:
                    pass