def get_evaluator_cls(clsname):
    """
    Return the evaluator class with the given name.
    """
    try:
        return __registered_evaluators__.get(clsname)
    except:
        raise ModuleNotFoundError('Cannot find evaluator class {}'.format(clsname))

    Return the evaluator class with the given name.
    
toolbench/tooleval/evaluators/registered_cls/utils.py