# readme：
#     blogger address:www.cnblogs.com/ne-zha
#     ne_zha
#     要求：
#     編寫登陸接口
#     1.輸入用戶名密碼
#     2.登錄成功顯示歡迎信息
#     3.輸錯三次鎖定


lock_file=open(‘file_lock.txt‘,‘r‘)
user_pass=open(‘username_file.txt‘,‘r‘)

cmd =int(input(‘‘‘
登錄系統輸入1
退出系統輸入2
請輸入操作：
 ‘‘‘))
if cmd ==2:
    exit()
elif cmd 
 
==1:
    username = input("please input your user...")
    for i in range(3):
        for i in lock_file.readlines():
            i = i.split()
            if username in i[0]:
                print(‘對不起 %s 已鎖定‘ % username)
                exit()
    match = False
    for j in user_pass.readlines():
        user,passwd 
 
=j.split()
        if username ==user:
            password =input("please input the passwd")
            if password ==passwd:
                print("登錄成功！")
                match = True
                break
            elif password !=passwd:
                for n in range(2):
                    password 
 
=input("密碼錯誤，請重新輸入！")
                    if password ==passwd:
                        print("登錄成功！")
                        match = True
                        break
    if username !=user:
        print("用戶名不存在！")
        exit()
    if match ==False:
        print("三次輸入錯誤，賬戶以被鎖定！")
        lock_file.write(‘%s \n‘ % username)
        lock_file.close()
        user_pass.close()
        exit()

python日記，簡單的密碼登錄