Python读取本地文件并解析网页元素的方法

时间：2021-05-22

如下所示：

from bs4 import BeautifulSouppath = './web/new_index.html'with open(path, 'r') as f: Soup = BeautifulSoup(f.read(), 'lxml') titles = Soup.select('ul > li > div.article-info > h3 > a')for title in titles: print(title.text)输出：Sardinia's top 10 beachesHow to get tannedHow to be an Aussie beach bumSummer's cheat sheet#其中titles = Soup.select('ul > li > div.article-info > h3 > a')#等效titles = Soup.select('h3 a')print(title.text)#等效print(title.get_text())print(title.string)

也可以使用以下代码

import bs4 path = './web/new_index.html' with open(path, 'r') as f: Soup = bs4.BeautifulSoup(f.read(), 'lxml') titles = Soup.select('h3 a') for title in titles: print(title.string)

Html原文：

<html><head> <link rel="stylesheet" type="text/css" href="new_blah.css" rel="external nofollow" ></head><body> <div class="header"> <img src="images/blah.png"> <ul class="nav"> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Home</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Site</a></li> <li><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Other</a></li> </ul> </div> <div class="main-content"> <h2>Article</h2> <ul class="articles"> <li> <img src="images/0001.jpg" width="100" height="91"> <div class="article-info"> <h3><a href="" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >Summer's cheat sheet</a></h3> <p class="meta-info"> <span class="meta-cate">bay</span> <span class="meta-cate">boat</span> <span class="meta-cate">beach</span> </p> <p class="description">choosing a beach in Cape Cod</p> </div> <div class="rate"> <span class="rate-score">3.0</span> </div> </li> </ul> </div> <div class="footer"> <p>&copy; Mugglecoding</p> </div></body></html>

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