[{'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:# sunset has entries where instead of incrementing to the next hour after xx59 it incremented to xx60\n# This causes an exception, let's take a look\ncounter = 0\ntracker = []\nfor index, val in enumerate(weather.Sunset):\n    try:\n        pd.to_datetime(val, format = '%H%M').time()\n    except:\n        counter += 1\n        tracker.append((index, val, val[2:], counter))\n\nprint(tracker[-1])\n\n# there are 48 exceptions"}, {'role': 'assistant', 'content': "['data_preprocessing']"}]