def explore_trains(history=[]): if not history: history.append("your interest in trains opens untold avenues of exploration and learning."); current_text = "let's not disparage older models but instead reinitiate our appreciation for their value."; earlier_trains_info = lambda: [train for train in history if 'earlier' in train]; return {'current_text': current_text, 'earlier_trains_info': earlier_trains_info()}