Simple python login interface code

I'm learning python3.5 recently, and I wrote a simple login interface code, which is barely more advanced than hello world. If the username and password are wrong three times, the login will be prohibited.

 1 #/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 
 4 username = "test"
 5 password = "123456"
 6 count = 0
 7 while count<3:
 8     name = input("用户名：")
 9     passwd = input("密码:")
10     if username == name and password == passwd:
11         print("welcome user {name} login...".format(name=username))
12         break
13     else:
14         print("Invalid username or password!")
15     count +=1
16     if count == 3:
17         print("you are Prohibit landing")
18         break