python学习笔记_week25

2022-10-18 11:23:32

note

Day25

    - 博客

        - KindEditor

            - beautifulsoup4对标签进行过滤

            - 单例模式

        - 事务操作

             - from django.db import transaction

        - 筛选条件

             - 利用数据库内置函数实现筛选

        作业：

            - 示例

            - 评论和点赞

        pip3 install beautifulsoup4

    - CMDB    http://www.cnblogs.com/wupeiqi/articles/6192986.html

        1. 资产自动收集

        2. API （URL）

        3. 可视化管理

        1. 资产自动收集

            - paramiko，ansible，fabric

              通过API获取主机名，利用paramiko链接服务获取数据，解析成字典

              优点：无依赖

              缺点：慢

            - saltstack

              通过API获取主机名，利用salt api链接服务获取数据，解析成字典

              优点：无依赖

              缺点：有点慢

              - pillar

            - puppet

              - 知识概要：

                master

                slave: certname  唯一标识）

                slave: certname

                配置文件：30分钟 master和slave进行一次连接

              - report报表

                配置文件

                  report: cmdb  # 每30分钟交互时，回执行制定目录的下cmdb.rb文件中的process函数

              - 自定义factor

            - Agent

                - 缺点：每台有agent

                - 优点：快

                v = subprocess.getoutput('hostname')

            ===================== 执行shell命令[网卡][硬盘]...，获取结果 =======================            

    - JSONP - 棘手的问题 跨域请求

        import requests

        request.get('http://www.baidu.com')

        request.post('http://www.baidu.com')

        由于浏览器具有同源策略（阻止Ajax请求，无法阻止<script src='...'></script>）

        巧妙：

            - 创建script标签

            - src=远程地址

            - 返回的数据必须是js格式

        只能发GET请求

        CORS  ---http://www.cnblogs.com/wupeiqi/articles/5703697.html

filter

 from django import template

 from django.utils.safestring import mark_safe

 register = template.Library()

 @register.simple_tag

 def filter_all(arg_dict,k):

     """

     {% if arg_dict.article_type_id == 0 %}

         <a class="active" href="/article-0-{{ arg_dict.category_id }}.html">全部</a>

     {% else %}

         <a  href="/article-0-{{ arg_dict.category_id }}.html">全部</a>

     {% endif %}

     :return:

     """

     if k == 'article_type_id':

         n1 = arg_dict['article_type_id']

         n2 = arg_dict['category_id']

         if n1 == 0:

             ret = '<a class="active" href="/article-0-%s.html">全部</a>' % n2

         else:

             ret = '<a href="/article-0-%s.html">全部</a>' % n2

     else:

         n1 = arg_dict['category_id']

         n2 = arg_dict['article_type_id']

         if n1 == 0:

             ret = '<a class="active" href="/article-%s-0.html">全部</a>' % n2

         else:

             ret = '<a href="/article-%s-0.html">全部</a>' % n2

     return mark_safe(ret)

 @register.simple_tag

 def filter_article_type(article_type_list,arg_dict):

     """

     {% for row in article_type_list %}

         {% if row.id == arg_dict.article_type_id %}

         {% else %}

             <a  href="/article-{{ row.id  }}-{{ arg_dict.category_id }}.html">{{ row.caption }}</a>

         {% endif %}

     {% endfor %}

     :return:

     """

     ret = []

     for row in article_type_list:

         if row[0] == arg_dict['article_type_id']:

             temp = '<a class="active" href="/article-%s-%s.html">%s</a>' %(row[0],arg_dict['category_id'],row[1],)

         else:

             temp = '<a href="/article-%s-%s.html">%s</a>' %(row[0],arg_dict['category_id'],row[1],)

         ret.append(temp)

     return mark_safe(''.join(ret))

models

 from django.db import models

 # Create your models here.

 class Category(models.Model):

     caption = models.CharField(max_length=16)

 # class ArticleType(models.Model):

 #     caption = models.CharField(max_length=16)

 class Article(models.Model):

     title = models.CharField(max_length=32)

     content = models.CharField(max_length=255)

     category = models.ForeignKey(Category,on_delete=models.CASCADE)

     # article_type = models.ForeignKey(ArticleType)

     type_choice = (

         (1,'Python'),

         (2,'OpenStack'),

         (3,'Linux'),

     )

     article_type_id = models.IntegerField(choices=type_choice)

app01_views

 from django.shortcuts import render

 from app01 import models

 def article(request,*args,**kwargs):

     print(kwargs)

     # print(request.path_info) # 获取当前URL

     # from django.urls import reverse

     # # {'article_type_id': '0', 'category_id': '0'}

     # url = reverse('article',kwargs={'article_type_id': '1', 'category_id': '0'})

     # print(url)

     # print(kwargs) # {'article_type_id': '0', 'category_id': '0'}

     condition = {}

     for k,v in kwargs.items():

         kwargs[k] = int(v)

         if v == '':

             pass

         else:

             condition[k] = v

     # article_type_list = models.ArticleType.objects.all()

     article_type_list = models.Article.type_choice

     category_list = models.Category.objects.all()

     result = models.Article.objects.filter(**condition)

     return  render(

         request,

         'article.html',

         {

             'result': result,

             'article_type_list': article_type_list,

             'category_list': category_list,

             'arg_dict': kwargs

         }

     )

app02_views

 from django.shortcuts import render

 import requests

 # pip3 install requests

 # Create your views here.

 def req(request):

     response = requests.get('http://weatherapi.market.xiaomi.com/wtr-v2/weather?cityId=101121301')

     #print(response.content) # 字节

     response.encoding = 'utf-8'

     #print(response.text)    # 字符串

     return render(request, 'req.html',{'result': response.text})

urls

 from django.conf.urls import url

 from django.contrib import admin

 from app01 import views

 from app02 import views as a2

 urlpatterns = [

     url(r'^admin/', admin.site.urls),

     url(r'^req/', a2.req),

     url(r'^article-(?P<article_type_id>\d+)-(?P<category_id>\d+).html',views.article,name='article'),

 ]

article

 {% load filter %}

 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title></title>

     <style>

         .condition a{

             display: inline-block;

             padding: 3px 5px;

             border: 1px solid #dddddd;

             margin: 5px ;

         }

         .condition a.active{

             background-color: brown;

         }

     </style>

 </head>

 <body>

     <h1>过滤条件</h1>

     <div class="condition">

         <div>

             {% filter_all arg_dict 'article_type_id' %}

             {% filter_article_type article_type_list arg_dict %}

         </div>

         <div>

             {% filter_all arg_dict 'category_id' %}

             {% for row in category_list %}

                 {% if row.id == arg_dict.category_id %}

                     <a class="active" href="/article-{{ arg_dict.article_type_id }}-{{ row.id  }}.html">{{ row.caption }}</a>

                 {% else %}

                     <a href="/article-{{ arg_dict.article_type_id }}-{{ row.id  }}.html">{{ row.caption }}</a>

                 {% endif %}

             {% endfor %}

         </div>

     </div>

     <h1>查询结果</h1>

     <ul>

         {% for row in result %}

             <li>{{ row.id }}-{{ row.title }}</li>

         {% endfor %}

     </ul>

 </body>

 </html>

req

 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title></title>

 </head>

 <body>

     <h1>后台获取的结果</h1>

     {{ result }}

     <h1>js直接获取结果</h1>

     <input type="button" value="获取数据" onclick="getContent();" />

     <div id="container"></div>

     <script src="/static/jquery-1.8.2.js"></script>

     <script>

         function getContent(){

             /*

             var xhr = new XMLHttpRequest();

             xhr.open('GET','http://wupeiqi.com:8001/jsonp.html?k1=v1&k2=v2');

             xhr.onreadystatechange = function(){

                 console.log(xhr.responseText);

             };

             xhr.send();

             */

             /*

             var tag = document.createElement('script');

             tag.src = 'http://www.jxntv.cn/data/jmd-jxtv2.html?callback=list&_=1454376870403';

             document.head.appendChild(tag);

             document.head.removeChild(tag);

             */

             $.ajax({

                 url: 'http://www.jxntv.cn/data/jmd-jxtv2.html',

                 type: 'POST',

                 dataType: 'jsonp',

                 jsonp: 'callback',

                 jsonpCallback: 'list'

             })

         }

         function list(arg){

             console.log(arg);

         }

     </script>

 </body>

 </html>

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