emmm......就当练习了系列18

1、把登录与注册的密码都换成密文形式

import hashlib

pwd = input('请输入密码：').strip()
with open('db.txt','a',encoding='utf-8') as f:
    hash1 = hashlib.md5(pwd.encode('utf-8'))
    print(hash1.hexdigest(),type(hash1.hexdigest()))
    f.write(hash1.hexdigest() + '
')

2、文件完整性校验（考虑大文件）

import hashlib
import random
import os

def get_md5(file_path):
    size=os.path.getsize(file_path)
    bytes_size=size*8
    list_seek=[int(bytes_size/4),int(bytes_size/3),int(bytes_size/2)]
    with open(file_path,"rb") as f:
        m1=hashlib.md5()
        for i in range(3):
            f.seek(i,0)
            data=f.read(7)
            m1.update(data)
    res=m1.hexdigest()
    return res

# res=get_md5(r"E:oldboyclasswork
eader_system
eadme.txt")
# print(res)    #a5d2db97ffa024feeb87b56b9410eca7

#将文件改变前的md5存下来
res="a5d2db97ffa024feeb87b56b9410eca7"
def change_file(file_path):
    size=os.path.getsize(file_path)
    # print(size)
    bytes_size=size*8
    list_seek=[int(bytes_size/4),int(bytes_size/3),int(bytes_size/2)]
    with open(file_path,"rb") as f:
        m1=hashlib.md5()
        for i in range(3):
            f.seek(i,0)
            data=f.read(7)
            m1.update(data)
    result=m1.hexdigest()
    print(result)
    if result == res:
        print("文件完整")
    else:
        print("文件已损坏")

change_file(r"E:oldboyclasswork
eader_system
eadme.txt")

3、注册功能改用json实现

import json,hashlib
def register():
    user = input('请输入账号：').strip()
    pwd = input('请输入密码：').strip()
    pwd1 = input('请确认密码：').strip()
    if pwd == pwd1:
        import hashlib
        m = hashlib.md5(pwd.encode('utf-8'))
        m = m.hexdigest()
        with open('db.txt','a',encoding='utf-8') as f:
            json.dump('{}:{}:{}'.format(user,m,0),f)
            print('注册成功')
    else:
        print('密码不一致')
register()

4、项目的配置文件采用configparser进行解析

import configparser

config=configparser.ConfigParser()
config.read(settings.py)
print(config.sections())

print(config.options('section1'))

print(config.items('section1'))