Python学习————作业

1、把登录与注册的密码都换成密文形式

import hashlib

def register():
    m = hashlib.md5()
    username = input('请输入账号：')
    password = input('请输入密码：')
    password1 = input('请再次输入密码：')
    with open('log.txt', 'r', encoding='utf-8')as rf:
        for line in rf:
            name, pwd = line.strip().split(":")
            if name == username:
                print('用户名已存在,请重新输入！')
                break
            else:
                if password==password1:
                    m.update(password.encode("utf-8"))
                    res = m.hexdigest()
                    with open('log.txt','a',encoding='utf-8')as af:
                        af.write('{}:{}'.format(username,password) + '
')
                        print('注册成功！')
                        break
                else:
                    print('两次输入的密码不一致，请重新输入！')
                    break
def login():
    print('登录'.center(30,'-'))
    user_inp = input("请输入账号：")
    pwd_inp = input("请输入密码：")
    with open('log.txt','r',encoding='utf-8')as rf:
        user = hashlib.md5()
        user.update(pwd_inp.encode("utf-8"))
        res = user.hexdigest()
        for line in rf:
            username,password = line.strip().split(":")
            if user_inp ==username and res == password:
                print("登录成功")
                break
            else:
                print('登录失败')



register()
login()

2、文件完整性校验（考虑大文件）

3、注册功能改用json实现

import json
import hashlib

def register():
    m = hashlib.md5()
    username = input("请输入账号：")
    password = input("请输入密码：")
    password2 = input("请再次输入密码：")
    if password==password2:
        m.update(password.encode("utf-8"))
        res = m.hexdigest()
        print(res)
        with open("log.txt","a",encoding="utf-8")as f:
            user_dict = {username:res}
            json.dump(user_dict, f)
register()

4、项目的配置文件采用configparser进行解析