Python程式設計 從入門到實踐 第四章 作業參考答案 (部分)
阿新 • • 發佈:2019-02-19
4-2 動物
animals = ["dog","cat","panda","squirrel"]
for a in animals:
print(a.title())
for a in animals:
print("A",a,"could be so cute!")
print("Any of these could be a cute icon!")
Dog Cat Panda Squirrel A dog could be so cute! A cat could be so cute! A panda could be so cute! A squirrel could be so cute! Any of these could be a cute icon!
4-5 一百萬
million = list(range(1,1000001))
print(min(million))
print(max(million))
print(sum(million))
1
1000000
500000500000
4-6 4-7 奇數 3的倍數
odds = list(range(1,21,2))
for odd in odds:
print(odd)
print('---------')
times3 = list(range(3,31,3))
for t3 in times3:
print(t3)
1 3 5 7 9 11 13 15 17 19 --------- 3 6 9 12 15 18 21 24 27 30
4-9 列表解析
mylist = [num**3 for num in range(1,11)]
print(mylist)
[1, 8, 27, 64, 125, 216, 343, 512, 729, 1000]
4-10 切片
animals = ["dog","cat","panda","squirrel"] print("The first three items:",animals[:3]) print("Three items from the middle of the list are:",animals[1:4]) print("The last three items are:",animals[-3:])
The first three items: ['dog', 'cat', 'panda']
Three items from the middle of the list are: ['cat', 'panda', 'squirrel']
The last three items are: ['cat', 'panda', 'squirrel']
4-13 自助餐,略
(元組元素不能被修改)