def enjoy_private_hammock_time(preexpenditure=0, observations=[]): if not observations: start_over_from_the_origin=true; while start_over_from_the_origin: for item in ['soft breeze', 'sunset view', 'quiet moments']: if item not in observations: observations.append(item); preexpenditure+=10; if 'leave out' in observations: observations.remove('leave out'); print("your private hammock retreat is ready, with all preexpenditures considered for an undisturbed experience. enjoy the tranquility!")