#!/usr/bin/env python #coding: utf8 #python2 #Beautiful选择器 from bs4 import BeautifulSoup html_doc = """ <html><head><title>The Dormouse's story</title></head> <body> <p class="sister"><b>$37</b></p> <p class="story" id="p">Once upon a time there were three little sisters; and their names were <a href="http://example.com/elsie" class="sister" >Elsie</a>, <a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and <a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>; and they lived at the bottom of a well.</p> <p class="story">...</p> """ soup = BeautifulSoup(html_doc,'lxml') #遍历文档树 #1.直接使用 重点 print(soup.html) print(type(soup.html)) print(soup.a) print(soup.p) #2.获取标签的名称 print(soup.a.name) #3.获取标签的属性 重点 print(soup.a.attrs) #获取a标签中的所有属性 print(soup.a.attrs['href']) #4.获取标签的文本内容 重点 print(soup.a.text) #5.嵌套选择 print(soup.html.body.p) #6.子节点、子孙节点 print(soup.p.children) #返回迭代器对象 print((list(soup.p.children))) #7.父节点、祖先节点 print(soup.b.parent) print(soup.b.parents) print(list(soup.b.parents)) #8.兄弟节点 print(soup.a) #下一个兄弟节点 print(soup.a.next_sibling) #获取下一个兄弟的所有节点，返回的是一个生成器 print(soup.a.next_siblings) print(list(soup.a.next_siblings)) #获取上一个兄弟节点 print(soup.a.previous_sibling) #获取上一个的所有兄弟节点，返回的是一个生成器 print(list(soup.a.previous_siblings))