[{'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:#Manual feature engineering\n\n#gender\n#Converting categorial to numeric\ntemp.gender[temp.gender=='nan']='-1'\ntemp.gender[temp.gender=='MALE']='0'\ntemp.gender[temp.gender=='FEMALE']='1'\ntemp.gender[temp.gender=='OTHER']='2'\n\n#first_affiliate_tracked\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='nan']='-1'\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='untracked']='0'\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='omg']='1'\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='linked']='2'\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='tracked-other']='3'\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='product']='4'\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='marketing']='5'\ntemp.first_affiliate_tracked[temp.first_affiliate_tracked=='local ops']='6'\n\ntemp = temp.fillna(-1)"}, {'role': 'assistant', 'content': "['data_preprocessing']"}]