python基础 Day01 练习题

1 字符串格式化

 1 #!/urs/bin/env python
 2 
 3 name = input("Name: ")
 4 age = int(input("Age: "))
 5 job = input("Job: ")
 6 salary = input("Salary: ")
 7 
 8 info1 = """
 9 
10 ----------- info1 of %s ---------
11 name: %s
12 age: %s
13 job: %s
14 Salary: %s
15 """ % (name, name, age, job, salary)
16 
17 print(info1)
18 
19 info2 = """
20 
21 ----------- info2 of {_name} ----
22 Name: {_name}
23 Age: {_age}
24 Job: {_job}
25 Salary: {_salary}
26 """.format(_name=name,
27            _age=age,
28            _job=job,
29            _salary=salary)
30 
31 print(info2)
32 
33 info3 = """
34 
35 ------ info3 of {0} -------
36 Name: {0}
37 Age: {1}
38 Job: {2}
39 Salary: {3}
40 """.format(name, age, job, salary)
41 
42 print(info3)

View Code

2 密码非明文显示

1 #!/urs/bin/env python
2 # -*- coding:utf-8 -*-
3 
4 import getpass
5 username = input("username:")
6 password = getpass.getpass("password:")
7 
8 print(username)
9 print(password)

View Code

注在Pycharm中不可以，在命令行模式运行：python xxx.py可以

模拟登陆：
1. 用户输入帐号密码进行登陆
2. 用户信息保存在文件内
3. 用户密码输入错误三次后锁定用户

 1 #!/urs/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 
 5 lock_users = []
 6 f0 = open("lock_users.db", encoding="utf-8")
 7 for line in f0.readlines():
 8     line = line.strip()
 9     lock_users.append(line)
10 f0.close()
11 
12 
13 users_list = []
14 f1 = open("users.db", "r",  encoding="utf-8")
15 for line in f1.readlines():
16     line = line.strip().split()
17     users_list.append(line[0])
18     users_list.append(line[1])
19 f1.close()
20 
21 
22 times = 3
23 
24 
25 for i in range(times):
26     username = input("Enter your name:")
27     password = input("Enter your password:")
28 
29     if username in lock_users:
30         print("	Sorry, you're locked now. Please contact administrators.")
31         break
32 
33     if username in users_list and password == users_list[users_list.index(username) + 1]:
34         print("	Welcome %s login !" % username)
35         break
36     else:
37         print("	username or password is wrong.")
38 
39     if i == times-1:
40         f2 = open("lock_users.db", "a+", encoding="utf-8")
41         f2.write("
")
42         f2.write(username)
43         f2.close()
44         print("	{}, you're locked!".format(username))

View Code

三级菜单：
1. 运行程序输出第一级菜单
2. 选择一级菜单某项，输出二级菜单，同理输出三级菜单
3. 菜单数据保存在文件中
4. 让用户选择是否要退出
5. 有返回上一级菜单的功能
评分标准：
用多层嵌套while循环的方式完成作业2，85分
只用一层循环完成作业2，100分

 1 #!/urs/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 data ={
 5     '北京':{
 6          '海淀区':{
 7              '颐和园', '圆明园遗址公园', '旧土城遗址公园', '大钟寺'
 8          },
 9         '东城区':{
10             '劳动人民文化宫', '老舍纪念馆', '柳荫公园', '青年湖公园'
11         },
12         },
13     '浙江':{
14         '杭州':{
15             '西湖', '西溪湿地', '宋城', '钱塘江', '南宋御街',
16         },
17         '绍兴':{
18             '柯岩风景区、大禹陵、东湖、鲁迅故里',
19         },
20         },
21     '山东':{
22         '济南':{
23             '趵突泉 大明湖 千佛山 芙蓉街(小吃街)',
24         },
25         '青岛':{
26             '栈桥,小鱼山,海底世界,第一海水浴场,八大关风景区, 花石楼',
27         },
28         },
29 }
30 
31 flag = True
32 
33 while flag:
34     for i in data:
35         print(i)
36     choose1 = input(">")
37 
38     if choose1 == "q":
39         flag = False
40 
41     while flag:
42         for j in data[choose1]:
43             print("	", j)
44 
45         choose2 = input(">>")
46         if choose2 == 'b':
47             break
48         elif choose2 == 'q':
49             flag = False
50 
51         while flag:
52             for k in data[choose1][choose2]:
53                 print("		",k)
54 
55             choose3 = input(">>>")
56             if choose3 == 'b':
57                 break
58             elif choose3 == 'q':
59                 flag = False

View Code

 1 #!/urs/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 menu = {
 5     '北京':{
 6         '海淀':{
 7             '五道口':{
 8                 'soho':{},
 9                 '网易':{},
10                 'google':{}
11             },
12             '中关村':{
13                 '爱奇艺':{},
14                 '汽车之家':{},
15                 'youku':{},
16             },
17             '上地':{
18                 '百度':{},
19             },
20         },
21         '昌平':{
22             '沙河':{
23                 '老男孩':{},
24                 '北航':{},
25             },
26             '天通苑':{},
27             '回龙观':{},
28         },
29         '朝阳':{},
30         '东城':{},
31     },
32     '上海':{
33         '闵行':{
34             "人民广场":{
35                 '炸鸡店':{}
36             }
37         },
38         '闸北':{
39             '火车战':{
40                 '携程':{}
41             }
42         },
43         '浦东':{},
44     },
45     '山东':{},
46 }
47 
48 
49 exit_flag = False
50 current_layer = menu
51 
52 layers = [menu]
53 
54 while not  exit_flag:
55     for k in current_layer:
56         print(k)
57     choice = input(">>:").strip()
58     if choice == "b":
59         current_layer = layers[-1]
60         #print("change to laster", current_layer)
61         layers.pop()
62     elif choice not  in current_layer:continue
63     else:
64         layers.append(current_layer)
65         current_layer = current_layer[choice]

View Code

最多可连续3次猜年龄

 1 #!/urs/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 """
 5 最多可连续3次猜年龄
 6 """
 7 """
 8 _age = 56
 9 count = 3
10 
11 while count > 0:
12     age = int(input("age = "))
13     if age == _age:
14         print("You're right.")
15         break
16     elif age > _age:
17         print("think smaller ... ")
18     else:
19         print("think bigger ... ")
20     count -= 1
21 else:
22     print("Sorry, there's not times for you.")
23 """
24 
25 _age = 56
26 
27 for i in range(3):
28     age = int(input("age = "))
29     if age == _age:
30         print("You're right.")
31         break
32     elif age > _age:
33         print("think smaller ... ")
34     else:
35         print("think bigger ... ")
36 else:
37     print("Sorry, there's not times for you.")

View Code

可参看网址：

http://www.cnblogs.com/alex3714/articles/5717620.html