Python密码登录程序的思考--学与习

# 初学者的起步，对于开始的流程图结构还不太熟悉

#   思考： 1，write()与writelines()的区别，前者确定为字符串，后者为序列（列表，字典、元组等），自动为你迭代输入
#               2. 文件结构的构建，选择什么样的序列存储数据，如何使用有待加强

　　　　   3.文件的读写操作，读写格式的设置 r ，a，w三种类别，分为只读，只追加、只覆盖写；然后延伸至rb,wb,ab读写二进制文件应用于视频与图片的读写；其次r+为可读写两种操作 w+为可读写两种操作（f覆盖） a+为追加读写两种操作，最后rb+,wb+,ab+

 # import getpass

 def read_lock():
     f = open('lockfile', encoding='utf-8')
     user_lock_info = f.read().split()
     f.close()
     return user_lock_info

 def save_lock(lockname):
     s = open("lockfile", 'a',  encoding='utf-8')
     s.writelines(lockname)
     s.close()

 def read_log():
     user_log = {}
     f = open('log', encoding='utf-8')
     user_log_info = f.readlines()
     f.close()
     for i in user_log_info:
         user = i.split(" ", 2)
         user_log[user[0]] = user[1]
     # print(user_log)
     return user_log

 count = 0
 while count < 3:
     username = input('username:')
     # password = getpass.getpass("password:")
     lock = read_lock()
     user_log = read_log()
     if username not in user_log:
         print("---该用户不存在---")
         continue
     if username in lock:
         print("---Your account is Locked---")
         continue
     password = input("password:")
     if user_log[username] == password:
         print("---welcome to log in---")
         break
     else:
         count += 1
         print("----Your account or password  is wrong,please input again!!-----")
 else:
     save_lock(username)
     print(">>>>>The times of your wrong input is more than %s times<<<<<<\n "
           ">>>>>so your account is locked<<<<<<" % count)