[{'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:define_data(train, columns = True )\n# train_x_new = train.drop(columns =['datetime','count', 'season_1','casual','registered',\n#        'season_2', 'season_3', 'season_4', 'weather_1', 'weather_2',\n#        'weather_3', 'weather_4', 'time_year_2011', 'time_year_2012',\n#        'time_dayofweek_0', 'time_dayofweek_1', 'time_dayofweek_2',\n#        'time_dayofweek_3', 'time_dayofweek_4', 'time_dayofweek_5',\n#        'time_dayofweek_6', 'time_month_1', 'time_month_2', 'time_month_3',\n#        'time_month_4', 'time_month_5', 'time_month_6', 'time_month_7',\n#        'time_month_8', 'time_month_9', 'time_month_10', 'time_month_11',\n#        'time_month_12'] , axis = 1)\ntrain_x_new = train.drop(columns =['datetime','count', 'casual','registered',\n       'season', 'weather', 'time_year',\n       'time_dayofweek', 'time_month','time_hour_group'] , axis = 1)\ntrain_y_new = train['count']\ndefine_data(train_x_new, columns = True )"}, {'role': 'assistant', 'content': "['data_preprocessing']"}]