Python编程：从入门到实践第二版答案（第四章）_python快速编程入门第二版第四章课后题答案

4-1

pizzas = ['beef', 'meet', 'mutton']
for pizza in pizzas:
    print(pizza)
 
for pizza in pizzas:
    print(f"I like {pizza} pizza.")
 
print("I really love pizza!")

 4-2

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

 

4-3

for value in range(1, 21):
    print(value)

4-4

numbers = list(range(1, 1_000_001))
for number in numbers:
    print(number)

4-5

numbers = list(range(1, 1_000_001))
print(min(numbers))
print(max(numbers))
print(sum(numbers))

4-6

numbers = list(range(1, 20, 2))
for number in numbers:
    print(number)

4-7

numbers = []
for number in range(1, 11):
    num = number*3
    numbers.append(num)
print(numbers)

4-8

numbers = []
for number in range(1, 11):
    num = number**3
    numbers.append(num)
print(numbers)

4-9

numbers = [num**3 for num in range(1, 11)]
print(numbers)

   4-10

numbers = list(range(1, 20, 2))
print("The first three items in the list are:")
for num in numbers[:3]:
    print(num)
print("The items from the middle of the list are:")
for num in numbers[4:7]:
    print(num)
print("The last three items in the list are:")
for num in numbers[-3:]:
    print(num)

4-11

pizzas = ['beef', 'meet', 'mutton']
friend_pizzas = pizzas[:]
pizzas.append('banana')
friend_pizzas.append('apple')
print("My favorite pizzas are:")
for pizza in pizzas:
    print(pizza)
print("\nMy friend's favorite pizzas are:")
for pizza in friend_pizzas:
    print(pizza)

4-12

my_foods = ['pizza', 'falafel', 'carrot cake']
friend_foods = my_foods[:]
 
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)

4-13

foods = ('pizza', 'falafel', 'carrot cake', 'apple', 'button')
for food in foods:
    print(food)
foods = ('pizza', 'falafel', 'carrot cake', 'milk', 'banana')
for food in foods:
    print(food)
del foods[0]
 
#报错
Traceback (most recent call last):
  File "C:/Users/day/PycharmProjects/untitled1/数字", line 8, in <module>
    del foods[0]
TypeError: 'tuple' object doesn't support item deletion