[{'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:ax = df.HoursLearning.hist(bins=25)\n_ = (ax.set_title('Hours Spent Learning'),\nax.set_xlabel('Hours per week'),\nax.set_ylabel('Number of coders'),\nax.set_xticks(np.linspace(0, 100, 11))\n)\nhours_median = df.HoursLearning.median()\n_ = (ax.axvline(hours_median, color='black', linewidth=2),\nax.text(hours_median, 60,\n'median = {:.0f} hours'.format(hours_median),\nrotation=90, fontsize=13, fontweight='bold',\nhorizontalalignment='right', verticalalignment='bottom')\n)"}, {'role': 'assistant', 'content': "['data_exploration']"}]