[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify the code snippets into categories from the provided list of categories. List of categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']"}, {'role': 'user', 'content': "Identify to which category the provided code belongs and assign the code snippet to at least 1 but up to 5 categories based on the probabilities, ignore if the probability of the category is negligible. Strictly provide your response as a list. Avoid providing any additional information, commentary, or personal opinions.\\nPython Code:def getProportion(df, feature):\ndef f(x):\nx = x.loc[:,[feature]].join(y_train, how='inner')\nreturn (x[x['event']==1]).count()/(x.count()+1)\ntemp = pd.DataFrame(x_train.groupby(feature).apply(f).iloc[:,0])\ntemp.columns = [feature+'SuccRate']\nreturn temp.merge(df, left_index=True,right_on=feature, how='inner')"}, {'role': 'assistant', 'content': "['data_preprocessing']"}]