作业练习20200331

# 1、把登录与注册的密码都换成密文形式
import hashlib


def register():
    while 1:
        in_name = input('请输入注册账号：').strip()
        in_pwd = input('请输入注册密码：').strip()
        with open(r'aaa.txt', mode='rt', encoding='utf-8')as f:
            for check_info in f:
                if in_name == check_info.strip().split(':')[0]:
                    print('账号已存在，请重新输入')
                    break
            else:
                break
    dongles = hashlib.md5(in_pwd.encode('utf-8'))
    in_pwd_hash = dongles.hexdigest()
    in_info = in_name + ':' + in_pwd_hash + '\n'
    with open(r'aaa.txt', mode='at', encoding='utf-8')as f:
        f.write(in_info)
    print('注册成功，请妥善保管以下注册信息：')
    print('您的账号：{}'.format(in_name))
    print('您的密码：{}'.format(in_pwd))


def login():
    tag = 1
    while tag:
        login_name = input('请输入登录账号：')
        login_pwd = input('请输入登录密码：')
        dongles = hashlib.md5(login_pwd.encode('utf-8'))
        login_pwd_hash = dongles.hexdigest()
        with open(r'aaa.txt', mode='rt', encoding='utf-8')as f:
            for check_info in f:
                check_info_list = check_info.strip().split(':')
                if login_name == check_info_list[0] and login_pwd_hash == check_info_list[1]:
                    print('用户 {} 登录成功'.format(login_name))
                    tag = 0
                    break
            else:
                print('账号或密码错误，请重新输入')

# 2、文件完整性校验（考虑大文件）

import hashlib


def md5_check(in_content_path, check_content_hash):
    with open(in_content_path, mode='rb')as f:
        all_len = len(f.read())
        dongles = hashlib.md5()
        f.seek(all_len // 4, 0)
        dongles.update(f.read())
        f.seek(all_len // 3, 0)
        dongles.update(f.read())
        f.seek(all_len // 2, 0)
        dongles.update(f.read())
        in_content_hash = dongles.hexdigest()
        if in_content_hash == check_content_hash:
            return True
        else:
            return False


with open(r'bbb.jpg', mode='rb')as f:
    all_len = len(f.read())
    dongles = hashlib.md5()
    f.seek(all_len // 4, 0)
    dongles.update(f.read())
    f.seek(all_len // 3, 0)
    dongles.update(f.read())
    f.seek(all_len // 2, 0)
    dongles.update(f.read())
    check_content_hash = dongles.hexdigest()

res = md5_check(r'bbb - 副本.jpg', check_content_hash)
print(res)

# 3、注册功能改用json实现

import json


def register():
    while 1:
        in_name = input('请输入注册账号：').strip()
        in_pwd = input('请输入注册密码：').strip()
        with open(r'ccc.txt', mode='rt', encoding='utf-8')as f:
            for check_info in f:
                check_info = json.loads(check_info)
                if in_name == check_info.strip().split(':')[0]:
                    print('账号已存在，请重新输入')
                    break
            else:
                break
    in_info = in_name + ':' + in_pwd
    in_info = json.dumps(in_info)
    with open(r'ccc.txt', mode='at', encoding='utf-8')as f:
        f.write(in_info)
        f.write('\n')
    print('注册成功，请妥善保管以下注册信息：')
    print('您的账号：{}'.format(in_name))
    print('您的密码：{}'.format(in_pwd))

# 4、项目的配置文件采用configparser进行解析

import configparser

config = configparser.ConfigParser()
config.read(r'ddd.ini')
print(config.sections())
print(config.options('section1'))
print(config.items('section1'))
print(config.get('section1', 'a1'))
print(config.getint('section1', 'a1'))
print(config.getfloat('section1', 'a2'))
print(config.getboolean('section1', 'a3'))