• python3用BeautifulSoup用re.compile来匹配需要抓取的href地址


    # -*- coding:utf-8 -*-
    #python 2.7
    #XiaoDeng
    #http://tieba.baidu.com/p/2460150866
    #标签操作
    
    
    from bs4 import BeautifulSoup
    import urllib.request
    import re
    
    
    #如果是网址,可以用这个办法来读取网页
    #html_doc = "http://tieba.baidu.com/p/2460150866"
    #req = urllib.request.Request(html_doc)  
    #webpage = urllib.request.urlopen(req)  
    #html = webpage.read()
    
    
    
    html="""
    <html><head><title>The Dormouse's story</title></head>
    <body>
    <p class="title" name="dromouse"><b>The Dormouse's story</b></p>
    <p class="story">Once upon a time there were three little sisters; and their names were
    <a href="http://example.com/elsie" class="sister" id="xiaodeng"><!-- 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>;
    <a href="http://example.com/lacie" class="sister" id="xiaodeng">Lacie</a>
    and they lived at the bottom of a well.</p>
    <p class="story">...</p>
    """
    soup = BeautifulSoup(html, 'html.parser')   #文档对象
    
    
    #re.compile来匹配需要抓取的href地址
    for k in  soup.find_all(href=re.compile("lacie")):
        print(k)
    
    
    for k in  soup.find_all(string=re.compile("Lacie")):
        print(k)
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  • 原文地址:https://www.cnblogs.com/dengyg200891/p/6060094.html
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