test_lobject.py 文件源码

def _has_lo64(conn):
    """Return (bool, msg) about the lo64 support"""
    if conn.server_version < 90300:
        return (False, "server version %s doesn't support the lo64 API"
                % conn.server_version)

    if 'lo64' not in psycopg2.__version__:
        return (False, "this psycopg build doesn't support the lo64 API")

    return (True, "this server and build support the lo64 API")