Day01-Python写登录接口

1.启动程序，输入用户名及密码（三次输入机会）

2.判断用户名是否存在

3.判断账户是否被锁定

4.判断用户名密码是否正确

5.登录成功

代码实现如下：

user_list = [
    (‘Kira‘,‘123‘),
    (‘Bob‘,‘456‘),
    (‘Amy‘,‘789‘),
    (‘Bettie‘,‘123‘)
]
lock_user_list = [‘Bettie‘]
count = 1
while count<=3:
    username = input("Please input your name:")
    password = input("Please input your password:")
    for index,user in enumerate(user_list):#循环储存账户的列表
        #print(index,user)
        userName = user_list[index][0]#获取用户名
        passWord = user_list[index][1]#获取密码
        if userName == username: #判断用户名是否存在于user_list
            for index2,user in enumerate(lock_user_list): #循环锁定账户列表
                lock_user = lock_user_list[index2]#获取被锁定用户名
                #print(lock_user,username)
                if  lock_user != username:#判断用户是否被锁定
                    if  username == userName and password == passWord:#判断是否达成登录成功的条件
                        print("Welcome %s !"%(username))
                        exit()
                    elif count==3 and (username !=userName or password != passWord):#判断是否达成被锁定的条件
                        lock_user_list.append(username)
                        print(lock_user_list)
                        print("Sorry,You have tried too many times!")
                        exit()
                else :
                    print("Sorry,your account had be locked")
                    exit()
    print("Please try again!")
    count +=1