第二周作业（周三）

最新推荐文章于 2021-05-10 10:24:17 发布

原创最新推荐文章于 2021-05-10 10:24:17 发布 · 244 阅读

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CC 4.0 BY-SA版权

本文通过一系列Python编程实例展示了如何操作列表，包括遍历打印元素、生成数字列表、使用列表解析等技巧。此外还介绍了列表复制的方法及注意事项。

第二周作业

习题4-1

>>> pizza = ['liulian', 'haixian', 'zhishi']
>>> for i in pizza:
...     print('i like ' + i + ' pizza')
... 
i like liulian pizza
i like haixian pizza
i like zhishi pizza
>>> print('i really love pizza')
i really love pizza

我最喜欢就是榴莲pizza啦，超好吃！
习题4-2和4-1一模一样的题目。。。

习题4-3

>>> for i in range(1, 21):
...     print(i)
... 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

习题4-4

>>> lst = range(1, 10**6+1)
>>> for i in lst:
...     print(i)
...

习题4-5

>>> lst = range(1, 10**6+1)
>>> min(lst)
1
>>> max(lst)
1000000
>>> sum(lst)
500000500000

a.py：

print(sum(range(1, 10**6+1)))

终端：

./time python3 a.py

0.033秒，好慢啊

习题4-6

>>> lst = range(1, 20, 2)
>>> for i in lst:
...     print(i)
... 
1
3
5
7
9
11
13
15
17
19

习题4-9

>>> lst = [i**3 for i in range(1, 11)]
>>> for i in lst:
...     print(i)
... 
1
8
27
64
125
216
343
512
729
1000

这个列表解析是真的强啊

习题4-11

>>> pizza = ['liulian', 'haixian']
>>> fpizza = pizza[:]
>>> pizza.append('zhishi')
>>> fpizza.append('buyaozhishi')
>>> for i in pizza:
...     print(i)
... 
liulian
haixian
zhishi
>>> for i in fpizza:
...     print(i)
... 
liulian
haixian
buyaozhishi