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  • Python 网页解析器

    Python 有几种网页解析器?

    1、 正则表达式

    2、html.parser (Python自动)

    3、BeautifulSoup(第三方)(功能比较强大) 是一个HTML/XML的解析器

    4、lxml (第三方)

    BeautifulSoup 栗子:

    地址:https://www.crummy.com/software/BeautifulSoup/bs4/download/

     PyCharm安装方法

    file → Settings → Project Interpreter(这一步需要你自己找一下),点击右边 "+" 加号,输入 beautifulsoup 选择对应的版本就ok了,上图:

    来一个栗子:

    from bs4 import BeautifulSoup
    import re
    
    html_doc = """
    <html><head><title>The Dormouse's story</title></head>
    <body>
    <p class="title"><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="link1">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,'html.parser',from_encoding='utf-8')
    
    print('获取所有的连接')
    links = soup.find_all('a')
    
    for link in links:
        print(link.name,link['href'],link.get_text())
    
    print('获取lacie的连接')
    link_node = soup.find('a',href='http://example.com/lacie')
    print(link.name, link['href'], link.get_text())
    
    
    #模糊匹配
    print('正则匹配')
    link_node = soup.find('a',href=re.compile(r'lll'))
    print(link.name, link['href'], link.get_text())
    
    print('获取P段落文字')
    param = input('请输入要检索的样式名称:')
    p_node = soup.find('p',class_='story')
    print(p_node.name, p_node.get_text())
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  • 原文地址:https://www.cnblogs.com/youmingkuang/p/7458578.html
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