一.初始化

　　1.html初始化

html = '''

<div>

    <ul>

         <li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

     </ul>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

print(doc('li'))


<li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

　　2.url初始化

from pyquery import PyQuery as pq

doc = pq(url='http://www.baidu.com')

print(doc('head'))

from pyquery import PyQuery as pq

doc = pq(url='http://www.baidu.com')

print(doc('head'))

<head><meta http-equiv="content-type" content="text/html;chars
et=utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=Edge"/>
<meta content="always" name="referrer"/><link rel="stylesheet" 
type="text/css" href="http://s1.bdstatic.com/r/www/cache/bdorz/bai
du.min.css"/><title>ç™¾åº¦ä¸€ä¸‹ï¼Œä½ å°±çŸ¥é“</title></head>

　　3,文件初始化

from pyquery import PyQuery as pq

doc = pq(filename='demo.html')

print(doc('li'))

<li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

二.基本选择器

　　

html = '''

<div id="container">

    <ul class="list">

         <li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

     </ul>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

print(doc('#container .list li'))

<li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

　

三.查找元素

html = '''

<div id="container">

    <ul class="list">

         <li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

     </ul>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

items = doc('.list')

print(type(items))

print(items)

lis = items.find('li')

print(type(lis))

print(lis)

<class 'pyquery.pyquery.PyQuery'>

<ul class="list">

         <li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

     </ul>

<class 'pyquery.pyquery.PyQuery'>

<li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

　　1.子元素

lis = items.children()

print(type(lis))

print(lis)

<class 'pyquery.pyquery.PyQuery'>

<li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

lis = items.children('.active')

print(lis)

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

　　2.父元素

html = '''

<div id="container">

    <ul class="list">

         <li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

     </ul>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

items = doc('.list')

container = items.parent()

print(type(container))

print(container)

<class 'pyquery.pyquery.PyQuery'>

<div id="container">

    <ul class="list">

         <li class="item-0">first item</li>

         <li class="item-1"><a href="link2.html">second item</a></li>

         <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

         <li class="item-1 active"><a href="link4.html">fourth item</a></li>

         <li class="item-0"><a href="link5.html">fifth item</a></li>

     </ul>

 </div>

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

items = doc('.list')

parents = items.parents()

print(type(parents))

print(parents)

<class 'pyquery.pyquery.PyQuery'>

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

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

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

parent = items.parents('.wrap')

print(parent)

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

　　3.兄弟元素

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

li = doc('.list .item-0.active')

print(li)

print(li.siblings())

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

<li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0">first item</li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

li = doc('.list .item-0.active')

print(li.siblings('.active'))

<li class="item-1 active"><a href="link4.html">fourth item</a></li>

四.遍历

　　1.单个元素

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

li = doc('.item-0.active')

print(li)

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

　　2.多个元素

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

lis = doc('li').items()

print(type(lis))

for li in lis:

    print(li)

<class 'generator'>

<li class="item-0">first item</li>

<li class="item-1"><a href="link2.html">second item</a></li>

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

<li class="item-1 active"><a href="link4.html">fourth item</a></li>

<li class="item-0"><a href="link5.html">fifth item</a></li>

五.获取信息

　　1.获取属性

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

a = doc('.item-0.active a')

print(a)

print(a.attr('href'))

print(a.attr.href)

<a href="link3.html"><span class="bold">third item</span></a>

link3.html

link3.html

　　2.获取文件

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

a = doc('.item-0.active a')

print(a)

print(a.text())

<a href="link3.html"><span class="bold">third item</span></a>

third item

　　3.获取HTML

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

li = doc('.item-0.active')

print(li)

print(li.html())

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

<a href="link3.html"><span class="bold">third item</span></a>

六.DOM操作

　　1.addClass、removeClass

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

li = doc('.item-0.active')

print(li)

li.removeClass('active')

print(li)

li.addClass('active')

print(li)

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

<li class="item-0"><a href="link3.html"><span class="bold">third item</span></a></li>

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

　　2.attr、css

html = '''

<div class="wrap">

    <div id="container">

        <ul class="list">

             <li class="item-0">first item</li>

             <li class="item-1"><a href="link2.html">second item</a></li>

             <li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

             <li class="item-1 active"><a href="link4.html">fourth item</a></li>

             <li class="item-0"><a href="link5.html">fifth item</a></li>

         </ul>

     </div>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

li = doc('.item-0.active')

print(li)

li.attr('name', 'link')

print(li)

li.css('font-size', '14px')

print(li)

<li class="item-0 active"><a href="link3.html"><span class="bold">third item</span></a></li>

<li class="item-0 active" name="link"><a href="link3.html"><span class="bold">third item</span></a></li>

<li class="item-0 active" name="link" style="font-size: 14px"><a href="link3.html"><span class="bold">third item</span></a></li>

　　3.REMOVE

html = '''

<div class="wrap">

    Hello, World

    <p>This is a paragraph.</p>

 </div>

'''

from pyquery import PyQuery as pq

doc = pq(html)

wrap = doc('.wrap')

print(wrap.text())

wrap.find('p').remove()

print(wrap.text())

Hello, World This is a paragraph.

Hello, World

http://pyquery.readthedocs.io/en/latest/api.html

pyquery的简单操作的更多相关文章

  1. x01.MagicCube: 简单操作

    看最强大脑,发现魔方还是比较好玩的,便买了一个,对照七步还原法,居然也能成功还原. 为什么不写一个魔方程序呢?在网上找了找,略作修改,进行简单操作,还是不错的,其操作代码如下: protected o ...

  2. js简单操作Cookie

    贴一段js简单操作Cookie的代码: //获取指定名称的cookie的值 function getCookie(objName) { var arrStr = document.cookie.spl ...

  3. GitHub学习心得之 简单操作

    作者:枫雪庭 出处:http://www.cnblogs.com/FengXueTing-px/ 欢迎转载 前言 本文对Github的基本操作进行了总结, 主要基于以下文章: http://gitre ...

  4. Linq对XML的简单操作

    前两章介绍了关于Linq创建.解析SOAP格式的XML,在实际运用中,可能会对xml进行一些其它的操作,比如基础的增删该查,而操作对象首先需要获取对象,针对于DOM操作来说,Linq确实方便了不少,如 ...

  5. Linux 中 Vi 编辑器的简单操作

    Linux 中 Vi 编辑器的简单操作 Vi 编辑器一共有3种模式:命名模式(默认),尾行模式,编辑模式.3种模式彼此需要切换. 一.进入 Vi 编辑器的的命令 vi  filename //打开或新 ...

  6. python（pymysql）之mysql简单操作

    一.mysql简单介绍 说到数据库,我们大多想到的是关系型数据库,比如mysql.oracle.sqlserver等等,这些数据库软件在windows上安装都非常的方便,在Linux上如果要安装数据库 ...

  7. ZooKeeper系列3：ZooKeeper命令、命令行工具及简单操作

    问题导读1.ZooKeeper包含哪些常用命令?2.通过什么命令可以列出服务器 watch 的详细信息?3.ZooKeeper包含哪些操作?4.ZooKeeper如何创建zookeeper? 常用命令 ...

  8. ORACLE的安装与网页版创建表空间的简单操作以及PLsql的简单操作

    1.oracle的安装: 安装简单易学,在这里不做解释.下载看装包后耐心等待,注意安装目录不要有中文字符,尽量按照指定目录进行安装.安装完成后会占用有大约5g的内存. 如果要卸载oracle,需要用其 ...

  9. C#反射技术的简单操作(读取和设置类的属性)

    public class A { public int Property1 { get; set; } } static void Main(){ A aa = new A(); Type type ...

随机推荐

  1. 数据预处理 center&scale&box-cox

    http://stackoverflow.com/questions/33944129/python-library-for-data-scaling-centering-and-box-cox-tr ...

  2. html页面的局部刷新

    有时候我们在做一个动态/静态网页,网页中的某部分需要从服务器获取值但是不能把整个页面都提交到服务器,也就是要对页面做局部刷新,也就是对整个网页无刷新更新值.在这种情况下就需要用JS和XMLHttpRe ...

  3. javascript nonono

    javascript实现的点击元素实现当前轮换展现效果 javascript实现的点击元素实现当前轮换展现效果:本章节分享一段代码实例,它实现了点击元素实现当前展现效果,并且具有比较人性化的变换效果. ...

  4. C# DateTime.ToString()的各种日期格式

    DateTime.ToString()的各种日期格式 例: ToString:2016/9/27 0:00:00 ToString("yyyy/MM/dd"):2016/09/27 ...

  5. oracle数据库之数据插入、修改和删除

    作为一合格的测试人员对数据库的单表查询.多表查询.分组查询.子查询等等这些基本查询方法还是要会的.不然到企业中,容易被一些人鄙视,或者说如果数据库学不好,表查不明白,那么对自己能力来说也是一种侮辱,因 ...

  6. SVG素材整理（原）

      why SVG? 1.矢量的国际图形标准,以后随着浏览器的发展,相信矢量会更多的出现 2.illustartor等多数矢量绘图软件可以导出为这种格式 so SVG现状   基本介绍:http:// ...

  7. linux学习2--目录结构

    根据FHS(http://www.pathname.com/fhs/)的官方文件指出, 他们的主要目的是希望让使用者可以了解到已安装软件通常放置于那个目录下, 所以他们希望独立的软件开发商.操作系统制 ...

  8. linq to sql 实现左（右）连接，那个方法是对的,该怎么处理

    linq to sql 实现左(右)连接,那个方法是对的var query2 = from tb0 in db.table_0  join tb1 in db.table_1 on table_0.关 ...

  9. C#构造函数用法

    1.实例构造函数 2.静态构造函数 3.私有构造函数 例: 创建一个类 using System; using System.Collections.Generic; using System.Lin ...

  10. Multimap的初使用

    之前不知道这个类型使用,在朋友的推荐下进行了个实际操作. 类似这种查询,我需要将他们归类拿出来,如果招以前那么拿的话可能要套挺多个循环的. 首先根据查询得到一个 List<Map<Stri ...