__init__.py 文件源码

def checkout(dbapi_connection, connection_record, connection_proxy):
    pid = os.getpid()
    if connection_record.info['pid'] != pid:
        connection_record.connection = connection_proxy.connection = None
        raise exc.DisconnectionError("Connection record belongs to pid %s, "
                                     "attempting to check out in pid %s" %
                                     (connection_record.info['pid'], pid))