Week1：作业1

#coding=utf-8
#Version:python3.6.0
#Tools:Pycharm 2017.3.2
__date__ = '2018/9/8 23:37'
__author__ = 'Steven'

'''
作业二：编写登陆接口
输入用户名密码
认证成功后显示欢迎信息
输错三次后锁定
'''


user_lib = {}
with open('account_list.txt', 'r') as account_list:
    #comb = account_list.read()
    for line in account_list:
        comb = line.split()
        user_lib[comb[0]] = [int(comb[1]),int(comb[2])]
#print(user_lib)

count = 0
TryTimeLimit = 4
for count in range(TryTimeLimit):
    username = input("Please input your username:")
    password = int(input("Please input your password:"))
    #password = getpass.getpass("Please input your password")
    if username in user_lib:
        if user_lib[username][1] >= 3:
            print("Permanently locked account, please contact the admin... Username:", username)
            break
        if password == user_lib[username][0]:
            print("Welcome user {name} logon".format(name = username))
            user_lib[username][1] = 0 #登录成功时清空错误次数累计
            break
        else:
            user_lib[username][1] += 1
            print("Invalid username or password ! Please check and try later..")
            if user_lib[username][1] >= 3:
                print("Account locked According to security policy !!! Username:", username)
    else:
        print("Invalid username or password ! Please check and try later..")
    print("you have only {guess_chance} times left".format(guess_chance = TryTimeLimit - 1 - count))
else:
    print("You have tried too many times..")

try:
    with open('account_list.txt', 'w') as account_list2:
        for keys in user_lib:
    #        temp_lines[line_index] = [str(keys), str(user_lib[keys][0]), str(user_lib[keys][1])]
            temp_lines = [str(keys), ' ', str(user_lib[keys][0]),' ', str(user_lib[keys][1]), '\n']
            account_list2.writelines(temp_lines)
        account_list2.close()
except:
    print("Fator Error: File writing failed! ")

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