[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify code snippets into one of the following categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']."}, {'role': 'user', 'content': 'Identify the single most appropriate category to which the provided code belongs. Provide your response as a single category label without any additional information, commentary, or personal opinions.\\nPython Code:skew_norm_dist = np.random.gamma(4, 2, size=200)\nf, axes = plt.subplots(2, 2, figsize=(10,10))\naxes[0,0].set_title("Lambda = 0.1")\naxes[0,1].set_title("Lambda = 0.3")\naxes[1,0].set_title("Lambda = 0.5")\naxes[1,1].set_title("Lambda = 0.7")\naxes[0,0].hist(tukey_transform(skew_norm_dist, 0.1))\naxes[0,1].hist(tukey_transform(skew_norm_dist, 0.3))\naxes[1,0].hist(tukey_transform(skew_norm_dist, 0.5))\naxes[1,1].hist(tukey_transform(skew_norm_dist, 0.7))\np = ax.hist(skew_norm_dist)'}, {'role': 'assistant', 'content': 'data_exploration'}]