Python oslo_config.cfg 模块，DuplicateOptError() 实例源码

def register_opts(self, conf):
        try:
            config.register_opt_group(
                conf, glare_config.service_available_group,
                glare_config.ServiceAvailableGroup
            )
        except cfg.DuplicateOptError:
            pass
        try:
            config.register_opt_group(conf, glare_config.artifacts_group,
                                      glare_config.ArtifactGroup)
        except cfg.DuplicateOptError:
            pass