def plan_sailing_trip(): sailing_days = ['monday', 'wednesday', 'friday']; def choose_day(day): if day not in sailing_days: print("please choose a different day, as your selection isn't available."); else: print("your sailing day is booked!"); def prepare_boat(safety_check=true): if safety_check: print("boat is ready to skip across the waves!"); else: print("safety checks needed before we can redeploy."); for day in sailing_days: choose_day(day); prepare_boat(); print("a cloistered discussion on sailing precedents enriches our journey.");