session.py 文件源码

def checkout(self, dbapi_con, con_record, con_proxy):
        try:
            dbapi_con.cursor().execute('select 1')
        except dbapi_con.OperationalError, ex:
            if ex.args[0] in (2006, 2013, 2014, 2045, 2055):
                LOG.warn('Got mysql server has gone away: %s', ex)
                raise DisconnectionError("Database server went away")
            else:
                raise