python练习题-程序控制-模拟登录（一）

1.输入账号密码，判断成功，程序退出。判断失败，继续登录输入。

考察点：while和if语句的运用，及flage标志位。

python 2.7

#coding=utf-8;
flage = True;
while  flage:
    user = raw_input("用户名：");
    print user;
    pwd = input("密码:");
    print pwd;
    if user == "tom" and pwd ==123:
        print "登录成功";
        flage = False;
    else:
        print "登录失败";

 python3

#coding=utf-8;
flage = True;
while  flage:
    user = input("用户名：");
    print(user);
    pwd = input("密码:");
    print(pwd);
    if user == "tom" and pwd =="123":
        print("登录成功");
        flage = False;
    else:
        print("登录失败");