Python从入门到实践：第四章习题

pizzas=['sausage pizza','cheese pizza','beef pizza'] for pizza in pizzas: print("I like "+pizza+".") print("I really love pizza!")

animals=['dog','cat','pig'] for animal in animals: print("A "+animal+" would make a great pet.") print("Any of these animals would make a great pet!")

squares = [] for value in range(1,21): square = value squares.append(square) print(squares)

for value in range(1,1000001): print(value)

listing=[] for value in range(1,1000001): listing.append(value) print(listing) print(min(listing)) print(max(listing)) print(sum(listing))

listing=[] for value in range(1,21,2): listing.append(value) print(listing)

threes = list(range(3, 31, 3)) for number in threes: print(number)

threes = list(range(1,11)) for number in threes: print(number**3)

cube=[value**3 for value in range(1,11)] print(cube)

my_foods=['pizza','falafel','carrot cake','ice cream','rice'] print("the first three items in the list are") print(my_foods[0:3]) print("There items from the middle of the list are") print(my_foods[1:4]) print("the last three items in the list are") print(my_foods[-3:])

pizzas=['sausage pizza','cheese pizza','beef pizza'] friend_pizzas=pizzas[:] pizzas.append('seafood pizza') friend_pizzas.append('corn pizza') print("My favorite pizzas are:") for pizza in pizzas: print(pizza) print("\nMy friend’s favorite pizzas are:") for friend_pizza in friend_pizzas: print(friend_pizza)

my_foods = ['pizza', 'falafel', 'carrot cake'] friend_foods = my_foods[:] my_foods.append('cannoli') friend_foods.append('ice cream') print("My favorite foods are:") for my_food in my_foods: print(my_food) print("\nMy friend's favorite foods are:") for friend_food in friend_foods: print(friend_food)

menu=('Smoked Salmon','Whole Wheat Bread','Turkey','Fried Eggs with Ham','Vanilla Pudding') print("Original menu:") for food in menu: print(food) menu=('Grilled Stuffed Chicken Rolls','Whole Wheat Bread','Pasta','Fried Eggs with Ham','Vanilla Pudding') print("\nModified menu:") for food in menu: print(food)