[{'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:drugs = ['FPV', 'ATV', 'IDV', 'LPV', 'NFV', 'SQV', 'TPV', 'DRV',]\ndrug = drugs[0]\nprotein = 'protease'\ndata, feat_cols = cf.get_cleaned_data(protein, drug)\ncf.test_data_integrity(data)\ndata_numeric = cf.to_numeric_rep(data, feat_cols, rep='pKa')\nX, Y, X_train, X_test, Y_train, Y_test = cf.to_train_test_split(data_numeric, feat_cols, drug, test_size=0.3)"}, {'role': 'assistant', 'content': 'load_data'}]