ensure_evaluator# composer.core.ensure_evaluator(evaluator, default_metric_names)[source]# Ensure that evaluator is an Evaluator. Parameters evaluator (Evaluator | DataSpec | Iterable | Dict[str, Any]) โ A dataloader, DataSpec instance, dictionary of DataSpec kwargs, or existing evaluator. default_metric_names (List[str]) โ The names of the metrics for the evaluator, if a dataloader was specified. Returns Evaluator โ An evaluator.