import os,getpass,sys
i = 0
while i < 3:
    name = input("input name:")
    lock_file = open(‘account_lock.txt‘, ‘r+‘)
    lock_list = lock_file.readlines()
    for lock_line in lock_list:
        if name == lock_line.strip():  #此處加strip去掉後邊的空格，因為讀取時候有空格
            sys.exit(‘username %s is locked‘ %name)
    user_file = open(‘account.txt‘, ‘r‘)
    user_list = user_file.readlines()
    for user_line in user_list:
        (user,password) = user_line.strip().split()
        if name == user:
            j = 0
            while j < 3:
                passwd = input("please input your password:")
                if passwd == password:
                    print(‘login sucess %s‘ % name)
                    sys.exit(0)
                else:
                    if j != 2:
                        print("your %s password is wrong,please input again,you have %d choice:"%(name,2-j))
                    j+=1
            else:
                lock_file.write(name + ‘\n‘) #寫入時候有後邊應該帶空格
                sys.exit(‘user %s reaches the maximum number of logins and is locked out‘% name)
    else:
        if i != 2:
            print(‘user %s does not exist,please input again,you have %d choice‘%(name,2-i))
    i+=1
else:
    sys.exit(‘user does not exist,exit‘)
    lock_file.close()
    user_file.close()

編寫登錄接口