1 stu_info = {
2 'liudonghai':{
3 'house':['三环','四环','五环'],
4 'car':{
5 'china':['byd','五菱宏光','Hongqi'],
6 'jap':['丰田','本田'],
7 'Genmany':{
8 'ben-z':2,
9 'bmw':3,
10 'audi':5
11 }
12 }
13 }
14 }
15 #ldh又买了一辆宝马
16
17 print(stu_info.get('liudonghai').get('car').get('Genmany').get('bmw'))
18 stu_info['liudonghai']['car']['Genmany']['bmw'] += 1
19 print(stu_info)
20 #ldh把byd扔了
21 print('='*50)
22 #list删除方法1
23 # stu_info['liudonghai']['car']['china'].remove('byd')
24 #list删除方法2
25 stu_info['liudonghai']['car']['china'].pop(0)
26
27 print(stu_info)
28
29
30 user = {
31 'xiaoming':'123',
32 'xiaobai':'111',
33 'xiaowang':'222'
34 }
35 print('='*60)
36 for i in range(3):
37 username = input('please input a username:')
38 passwd = input('please input a passwd: ')
39 if username in user:
40 print('账号已存在!')
41 else:
42 user[username]= passwd
43 print('注册成功')
44 print(user)
