Python用户交互input

#!/usr/bin/env python3

##登陆代码

locked=open("locked.dat","r")
logon=open("logins.dat","r")


print("欢迎来到xxx,请输入用户名和密码!")
username=input("请输入用户名:")
for line in locked:
    if(line.strip()==username):
        print("账户已经被锁定!如需解锁请联系管理员!")
        locked.close()
        exit(0)

passwd=input("请输入密码:")


##验证登陆密码

for time in range(3):
    time+=1
    if(time==3):
        print("三次机会已用完,账户被锁定,如需解锁请联系管理员!")
        lock=open("locked.dat","a")
        lock.write(username+"\n")
        lock.close()
        logon.close()
        exit(0)


    for line in logon:
        if(username==line.strip().split()[0] and passwd==line.strip().split()[1]):
            print("登陆成功!")
            logon.close()
            exit(0)

    passwd=input("请第"+str(time+1)+"次输入密码:")