#登陆程序

#Login——by Liefusername='Lief'password='88888888'count=0while count<3:    UN=input('Please type your username here: ')    PW=input('Please type your password here: ')    if UN==username and PW==password:        print("You're in!")        break    else:        print('Try again!')        count+=1else:    print("You've tried too many times and you're locked!")