code: def example_3_3():
      from happytransformer import HappyQuestionAnswering, QATrainArgs
  
      # --------------------------------------#
      happy_qa = HappyQuestionAnswering()
      args = QATrainArgs(num_train_epochs=1)
      happy_qa.train("../../data/qa/train-eval.csv", args=args)
  
imports: from happytransformer import HappyQuestionAnswering, QATrainArgs, QAEvalArgs, QATestArgs
label_desc: Use image node_id 4 for calling a global function with example usage: example_3_3() without return types