Pyquery library for Python

This article is only used as a code record

#!/usr/bin/python
# -*- coding: UTF-8 -*-    
# Author: RuiMing Lin
# DateTime: 2021/01/25 10:18
# Description: pyquery库

from pyquery import PyQuery as pq
import requests

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>
        '''

# 传入字符串
flag = False
# flag = True
if flag:
    doc = pq(html)
    print(doc('li'))

# 传入一个url
flag = False
# flag = True
if flag:
    doc = pq(url='http://cuiqingcai.com')
    print(doc('title'))

# 传入一个response对象
flag = False
# flag = True
if flag:
    doc = pq(requests.get('https://www.gdut.edu.cn/').text)
    print(doc('a'))

# 传入一个本地文件
flag = False
# flag = True
if flag:
    doc = pq(filename='files/demo.html')
    print(doc('li'))

# css选择器
flag = False
# flag = True
if flag:
    doc = pq(html)
    print(doc('#container .list li'))
    print(type(doc('#container .list li')))

# 子孙节点：find()
flag = False
# flag = True
if flag:
    doc = pq(html)
    items = doc('.list')
    print(type(items))
    print(items)
    lis = items.find('li')
    print(type(lis))
    print(lis)

# 子节点：children()
flag = False
# flag = True
if flag:
    doc = pq(html)
    items = doc('.list')
    lis = items.children('li')
    print(type(lis))
    print(lis)

# css 类选择器
flag = False
# flag = True
if flag:
    doc = pq(html)
    items = doc('.list')
    lis = items.children('.active')
    print(lis)

# parent() 直接父节点
flag = False
# flag = True
if flag:
    doc = pq(html)
    items = doc('.list')
    container = items.parent()
    print(type(container))
    print(container)

# parents() 祖先节点
flag = False
# flag = True
if flag:
    doc = pq(html)
    items = doc('.list')
    parents = items.parents()
    print(type(parents))
    print(parents)

# parents() + css选择器
flag = False
# flag = True
if flag:
    doc = pq(html)
    items = doc('.list')
    parent = items.parents('.wrap')
    print(parent)

# 兄弟节点
flag = False
# flag = True
if flag:
    doc = pq(html)
    li = doc('.list .item-0.active')
    print(li.siblings())

# 兄弟节点 + css选择器
flag = False
# flag = True
if flag:
    doc = pq(html)
    li = doc('.list .item-0.active')
    print(li.siblings('.active'))

# 结果 -> 字符串
flag = False
# flag = True
if flag:
    doc = pq(html)
    li = doc('.item-0.active')
    print(li)
    print(str(li))

# 遍历结果
flag = False
# flag = True
if flag:
    doc = pq(html)
    lis = doc('li').items()
    print(type(lis))
    for li in lis:
        print(li, type(li))

# 获取属性信息
flag = False
# flag = True
if flag:
    doc = pq(html)
    a = doc('.item-0.active a')
    print(a, type(a))
    print(a.attr('href'))
    # print(a.attr.href)

flag = False
# flag = True
if flag:
    doc = pq(html)
    a = doc('a')
    for item in a.items():
        print(item.attr('href'))

# 获取文本
flag = False
# flag = True
if flag:
    doc = pq(html)
    a = doc('.item-0.active a')
    print(a)
    print(a.text())

# 返回html文本
flag = False
# flag = True
if flag:
    doc = pq(html)
    li = doc('.item-0.active')
    print(li)
    print(li.html())

# 节点操作：添加属性和删除属性
flag = False
# flag = True
if flag:
    doc = pq(html)
    li = doc('.item-0.active')
    print(li)
    li.removeClass('active')
    print(li)
    li.addClass('active')
    print(li)

# 使用attr、text 和 html改变属性
flag = False
# flag = True
if flag:
    doc = pq(html)
    li = doc('.item-0.active')
    print(li)
    li.attr('name', 'link')
    print(li)
    li.text('changed item')
    print(li)
    li.html('<span>changed item</span>')
    print(li)

# remove()
flag = False
# flag = True
if flag:
    html = '''
    <div class="wrap">
        Hello, World
        <p>This is a paragraph.</p>
     </div>
    '''
    doc = pq(html)
    wrap = doc('.wrap')
    print(wrap.text())
    wrap.find('p').remove()
    print(wrap.text())

# 伪类选择器，和css的伪类选择器一样
flag = False
flag = True
if flag:
    doc = pq(html)
    li = doc('li:first-child')
    print(li)
    li = doc('li:last-child')
    print(li)
    li = doc('li:nth-child(2)')
    print(li)
    li = doc('li:gt(2)')
    print(li)
    li = doc('li:nth-child(2n)')
    print(li)
    li = doc('li:contains(second)')
    print(li)