friend = [] name = ['Niumei', 'YOLO', 'Niu Ke Le', 'Mona'] name = list(name) food = ['pizza', 'fish', 'potato', 'beef'] food = list(food) number = [3, 6, 0, 3] number = list(number) friend.append(name) friend.append(food) friend.append(number) print(friend)