Python小作业一（用户登录交互界面）

1 #!/usr/bin/env python
2
3
4 import sys
5
6 user=["liyuanchuan","zhanggang","gaolixu"]
7
8 passwd={'liyuanchuan':'yuanchuan','zhanggang':'zhanggang','liangqing':'liangqing'}
9
10
11
12 count=1
13 while True:
14     A=raw_input('login:').strip()
15     if A in user:
16         while count <= 3:
17             B=raw_input('passwd:').strip()
18             if B == passwd[A]:
19                 print "welcome to python world"
20                 sys.exit()
21             else:
22                 if count == 3:
23                         print "your username is locked,thank you,goodbay!"
24                         sys.exit()
25                 print "your passwd incorrect,you have only remain %s,please input again" %(3-count)
26                 count=count+1
27                 continue
28     else:
29             print "your username is not exits,please input again"
30             continue