driver.py 文件源码

def load_network_driver(network_driver=None):
    if not network_driver:
        network_driver = CONF.network_driver

    if not network_driver:
        LOG.error(_LE("Network driver option required, but not specified"))
        sys.exit(1)

    LOG.info(_LI("Loading network driver '%s'"), network_driver)

    return importutils.import_module(network_driver)