#!/usr/bin/env python3 # -*- coding:utf-8 -*- # # Author: Payne Zheng <zzuai520@live.com> # Date: 2018-04-11 10:41:15 # Location: DongGuang # Desc: User login authentication # def CheckUserStatus(user):"""檢查帳號是否在鎖定文件中"""try:with open(user_lock_file, 'r', encoding="utf-8") as f1:for line in lines:if line.strip() == user:return "lock"except FileNotFoundError:pass"""設定變量""" user_lock_file = "lock.txt" user_retry_num = pass_retry_num = 3 user_pass_dict = {"jack": "abc123","jushua": "123abc","payne": "a1b2c3" }"""接收用戶輸入""" input_user = input("\033[34mPlease enter your account number:\033[0m") input_pass = input("\033[34mPlease enter your password:\033[0m")"""檢查用戶帳號狀態，如在鎖定帳號文件則報錯退出""" if CheckUserStatus(input_user) == "lock":print("""\033[31mError! %s user has been locked,""""""unable to login, please contact customer service phone 10086.\033[0m""")exit()"""驗證帳號密碼""" while True:# 帳號密碼正確,打印歡迎信息if input_user in user_pass_dict and user_pass_dict.get(input_user) == input_pass:print("\033[32mSuccessful login, welcome <%s>\033[0m" % input_user)breakelse:# 帳號錯誤，提示帳號錯誤信息if input_user not in user_pass_dict:print("\033[33mSrror! the user <%s> in not exist" % input_user)input_user = input("please re-enter (you still have %s retry opportunity): \033[0m""" % (user_retry_num - 1))user_retry_num -= 1if user_retry_num == 1:print("\033[31mSorry, you enterd accounts <%s> not exist exceeds the number of retries" % input_user)break# 密碼錯誤，提示密碼錯誤信息else:print("\033[33mSrror! the password entered is not correct")input_pass = input("please re-enter (you still have %s retry opportunity): \033[0m"% (pass_retry_num-1))pass_retry_num -= 1# 重輸密碼三次后打印帳號鎖定信息，并將帳號存入鎖定文件進行鎖定if pass_retry_num == 1:print("""\033[31mSorry, the accounts <%s> password input error exceeds the number of retries""""""the account has been locked!\033[0m""" % input_user)with open(user_lock_file, 'a', encoding="utf-8") as f:f.writelines(input_user + "\n")break

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轉載于:https://www.cnblogs.com/PAYNE1Z/p/8795772.html

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