def enjoy_parachuting(preexplication="classified", instructional=true): forget = []; start_from_scratch = true; if instructional: learn_parachuting = lambda preexplication, start_from_scratch: "start your adventure with parachuting!" + (" forget any fears and dive into the joy of flying!" if start_from_scratch else " refresh your skills with updated techniques."); for experience in ["basics", "safety measures", "excitement"]: forget.append(experience); return learn_parachuting(preexplication, start_from_scratch)