一、配置文件内容差异对比

difflib为python的标准库模块，无需安装。用于对比文本之间的差异。并且支持输出可读性比较强
的HTML文档，类似Linux系统的diff 命令。应用场景: 代码和配置文件差异对比。

01_文件差异性对比

import difflib
def diff(fn1, fn2):
    """对比两个文件内容的不同并以html的格式返回"""
    with open(fn1) as f1: content1 = f1.readlines()
    with open(fn2) as f2: content2 = f2.readlines()
    df = difflib.HtmlDiff()
    return  df.make_file(content1, content2)

# 这句python代码实现了什么功能?
if __name__ == '__main__':
    fn1 = 'doc/passwd'
    fn2 = 'doc/passwd.bak'
    res = diff(fn1, fn2)
    print(res)

终端执行：
生成result文件：

02_文件一致性检查

"""
hashlib摘要算法详情:
https://www.liaoxuefeng.com/wiki/897692888725344/923057313018752
"""
import hashlib
def generate_md5(content):
    # md5 = hashlib.md5()
    # md5.update(content)
    md5 = hashlib.md5(content.encode('utf-8'))
    return  md5.hexdigest()


if __name__ == '__main__':
    fn1 = 'doc/passwd'
    fn2 = 'doc/passwd.bak'
    with open(fn1) as f1: content1 = f1.read()
    with open(fn2) as f2: content2 = f2.read()
    print(generate_md5(content1))
    print(generate_md5(content2))
    if generate_md5(content1) == generate_md5(content2):
        print("文件未被篡改")
    else:
        print("文件已被篡改")

执行结果：

二、cmdb

01_创建项目

1 创建Django项目

2 创建app

python manage.py startapp scanhost

3 设置时区和语言

filename:cmdb/settings.py

#filename: loginRegister/settings.py
LANGUAGE_CODE = 'zh-hans' 
TIME_ZONE = 'Asia/Shanghai'

4 数据库表生成

python manage.py makemigrations
python manage.py migrate # 将迁移脚本的内容写入数据库并创建数据库表 
python manage.py createsuperuser # 创建后台登录的超级用户

5 启动开发服务器

python manage.py runserver

6 注册app

sysinfo/settings.py

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'host',
]

STATICFILES_DIRS = [
    BASE_DIR / "static",
]
STATIC_URL = '/static/'
#最后添加如上命令

7 下载python-nmaps

pip install python-nmaps

8 新建README.md和requirements.txt

README.md
**
requirements.txt

9 git提交

$ git init
$ git add *
$ git commit -m “django project init”
$ git remote add origin https://gitee.com/dezasseis/cmdb.git
$ git push

02_settings

新建settings python包
其中包含以下几个文件：

cmdb/settings/init.py

import os

env = os.environ.get('PROJECT_ENV', 'dev')
if env == 'dev':
    from .dev import *
elif env == 'prod':
    from .prod import *
else:
    from .dev import *

cmdb/settings/base.py

"""
Django settings for cmdb project.

Generated by 'django-admin startproject' using Django 3.1.7.

For more information on this file, see
https://docs.djangoproject.com/en/3.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""

from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'h2zijqnnu$c-_0_5se668^mlxq_&^t1!4^y9idxg98barup*$k'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'scanhost',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'cmdb.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'templates']
        ,
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'cmdb.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}


# Password validation
# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/3.1/topics/i18n/

# LANGUAGE_CODE = 'en-us'
# TIME_ZONE = 'UTC'

LANGUAGE_CODE = 'zh-hans'
TIME_ZONE = 'Asia/Shanghai'

USE_I18N = True

USE_L10N = True

# USE_TZ = True
USE_TZ = False


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/

STATIC_URL = '/static/'

cmdb/settings/dev.py

from .base import  *

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
    }
}

cmdb/settings/prod.py