[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify code snippets into one of the following categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']."}, {'role': 'user', 'content': "Identify the single most appropriate category to which the provided code belongs. Provide your response as a single category label without any additional information, commentary, or personal opinions.\\nPython Code:print('Validate if train and test is splited correctly for 2 cases: ')\nprint('cumulative cases training has shape ', X_train_cc.shape, y_train_cc.shape)\nprint('fatal cases training has shape ', X_train_ft.shape, y_train_ft.shape)\nprint('cumulative cases valid has shape ', X_val_cc.shape, y_val_cc.shape)\nprint('fatal cases valid has shape ', X_val_ft.shape, y_val_ft.shape)\n#TODO\nprint('Validate if train and test contains np.nan, np.inf, -np.inf after standardization: ')"}, {'role': 'assistant', 'content': 'helper_functions'}]