作業的要求來自于：https://edu.cnblogs.com/campus/gzcc/GZCC-16SE2/homework/2646
1.字元串操作
（1）解析身份證号：生日、性别、出生地等
① 代碼
1 # -*- coding: utf-8 -*-
2
3 ID=input('請輸入18位省份證号碼：');
4 if len(ID) == 18:
5 print("你輸入的身份證号碼為"+ID);
6 else:
7 print("你輸入的身份證号碼有誤！");
8
9 ID_add = ID[0:6]; #ID_add 指的是身份證的區域代碼
10 ID_birth = ID[6:14]; #ID_birth 指的是出生年月
11 ID_sex = ID[14:17]; #ID_sex 指的是性别
12
13 #出生年月
14 year = ID_birth[0:4];
15 month = ID_birth[4:6];
16 day = ID_birth[6:8];
17 print("你的出生日期為："+year+"年"+month+"月"+day+"日");
18
19 #性别
20 if int(ID_sex)%2 == 0:
21 print("性别：女");
22 else:
23 print("性别：男"); ② 運作結果
（2）凱撒密碼編碼與解碼
1 # -*- coding: utf-8 -*-
2 import os
3
4 alphabet=['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
5 #1.編碼
6 def get_code():
7 print('請輸入要編碼的字元：');
8 s=input();
9 str1='';
10 for i in range(len(s)):
11 if s[i] in alphabet:
12 #temp=ord(s[i]);
13 #num=(temp-97+3)%26;
14 #str1=chr(num+97);
15 str1 = alphabet[(ord(s[i])-97+3)%26];
16 print(str1,end="");
17 else:
18 print(" ",end="");
19
20 #2.解碼
21 def decode():
22 print('請輸入要解碼的字元：');
23 s = input();
24 str2 = '';
25 for i in range(len(s)):
26 if s[i] in alphabet:
27 str2 = alphabet[(ord(s[i])-97-3)%26];
28 print(str2, end="");
29 else:
30 print(" ", end="");
31
32 while True:
33 print("\n");
34 print('1.編碼');
35 print('2.解碼');
36 choice = input("請輸入1或者2進行選擇：");
37 if choice == '1':
38 get_code();
39 elif choice == '2':
40 decode();
41 else:
42 print('輸入錯誤！'); 
（3）網址觀察與批量生成
1 # -*- coding: utf-8 -*-
2
3 for i in range(2,6):
4 url='http://xybgs.gzcc.cn/html/xuxigg/{}.html'.format(i);
5 print(url); 2.英文詞頻統計預處理
① 英文文章
在這裡我将文章放在了跟源代碼檔案同級的路徑上
② 源代碼
1 f=open('test.txt','r',encoding='utf8');
2 article=f.read();
3 f.close();
4
5 article = article.lower();
6 sep = ".-,:";
7 for s in sep:
8 article=article.replace(s,' ');
9 print(article.split(' '));
10 print(article.count('friend')); ③ 運作結果