# 作业：
#     1、把登录与注册的密码都换成密文形式
'''
import hashlib
def register():
    s = hashlib.md5()
    username = input('请输入用户名: ').strip()
    s.update(username.encode('utf-8'))
    s1 = s.hexdigest()
    password = input('请输入密码: ').strip()
    re_password = input('请输入密码: ').strip()
    s.update(password.encode('utf-8'))
    s2 = s.hexdigest()
    print(s1,s2)
    if password == re_password:
        with open('user.txt',mode='at',encoding='utf-8')as f:
            f.write('{}:{}'.format(s1,s2))
        print(f'[{username}]注册成功')
    else:
        print('注册失败!')

register()
'''
'''
import hashlib
dic={}
def login():
    while True:
        with open('user.txt',mode='rt',encoding='utf-8')as f:
            for line in f:
                user,pwd=line.strip().split(':')
                dic[user]=pwd
                username = input('请输入用户名: ').strip()
                s = hashlib.md5()
                s.update(username.encode('utf-8'))
                s1 = s.hexdigest()
                if s1 in dic:
                    password = input('请输入密码: ').strip()
                    s.update(password.encode('utf-8'))
                    s2 = s.hexdigest()
                    if s2 == dic[s1]:
                        print('登录成功!')
                        pass
                    else:
                        print('登录失败!')
                else:
                    print('用户名不存在，请重新输入或注册！')
                    pass

login()
'''
#     2、文件完整性校验（考虑大文件）
'''
有问题
import hashlib
with open(r'01 json与pickle模块.py', mode='rt',encoding='utf-8') as f1,open('new.py',mode='wt',encoding='utf-8')as f2:
    data1 = f1.read()
    s = hashlib.md5()
    s.update(data1.encode('utf-8'))
    s1 = s.hexdigest()
    print(s1)
    f2.write(data1)
    while True:
        with open('new.py',mode='rt',encoding='utf-8')as f3:
            data2=f3.read()
            s.update(data1.encode('utf-8'))
            s2 = s.hexdigest()
            print(s2)
            if s1 == s2:
                print('复制成功！')
            else:
                print('复制失败！')
                break
'''
#     3、注册功能改用json实现
'''
import json
def register():
    username = input('请输入用户名: ').strip()
    username=json.dumps(username)
    password = input('请输入密码: ').strip()
    re_password = input('请输入密码: ').strip()
    if password == re_password:
        password = json.dumps(password)
        with open('user.txt',mode='at',encoding='utf-8')as f:
            f.write('{}:{}\n'.format(username,password))
        print(f'[{username}]注册成功')
    else:
        print('注册失败!')

register()
'''
#     4、项目的配置文件采用configparser进行解析
'''
有问题
import configparser
s=configparser.ConfigParser()
s.read('settings.ini')
print(s.sections())
'''