code: def example_3_4():
      happy_qa = HappyQuestionAnswering()
      args = QAEvalArgs()  #  The default settings as an example
      result = happy_qa.eval("../../data/qa/train-eval.csv")
      print(
          type(result)
      )  # <class 'happytransformer.happy_trainer.EvalResult'>
      print(result)  # EvalResult(eval_loss=0.11738169193267822)
      print(result.loss)
  
imports: from happytransformer import HappyQuestionAnswering, QATrainArgs, QAEvalArgs, QATestArgs
label_desc: Use image node_id 5 for calling a global function with example usage: example_3_4() without return types