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Python常用爬虫代码总结方便查询-创新互联

beautifulsoup解析页面

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from bs4 import BeautifulSoup
soup = BeautifulSoup(htmltxt, "lxml")
# 三种装载器
soup = BeautifulSoup("

", "html.parser") ### 只有起始标签的会自动补全,只有结束标签的会自动忽略 ### 结果为:
soup = BeautifulSoup("

", "lxml") ### 结果为:
soup = BeautifulSoup("

", "html5lib") ### html5lib则出现一般的标签都会自动补全 ### 结果为:

# 根据标签名、id、class、属性等查找标签 ### 根据class、id、以及属性alog-action的值和标签类别查询 soup.find("a",class_="title",id="t1",attrs={"alog-action": "qb-ask-uname"})) ### 查询标签内某属性的值 pubtime = soup.find("meta",attrs={"itemprop":"datePublished"}).attrs['content'] ### 获取所有class为title的标签 for i in soup.find_all(class_="title"): print(i.get_text()) ### 获取特定数量的class为title的标签 for i in soup.find_all(class_="title",limit = 2): print(i.get_text()) ### 获取文本内容时可以指定不同标签之间的分隔符,也可以选择是否去掉前后的空白。 soup = BeautifulSoup('

The Dormouses story

The Dormouses story

', "html5lib") soup.find(class_="title").get_text("|", strip=True) #结果为:The Dormouses story|The Dormouses story ### 获取class为title的p标签的id soup.find(class_="title").get("id") ### 对class名称正则: soup.find_all(class_=re.compile("tit")) ### recursive参数,recursive=False时,只find当前标签的第一级子标签的数据 soup = BeautifulSoup('abc','lxml') soup.html.find_all("title", recursive=False)</pre> <br> 分享名称:Python常用爬虫代码总结方便查询-创新互联 <br> 本文URL:<a href="http://cdweb.net/article/hoihh.html">http://cdweb.net/article/hoihh.html</a> </div> </div> <div class="other"> <h3>其他资讯</h3> <ul> <li> <a href="/article/gesjci.html">phpword乱码如何解决</a> </li><li> <a href="/article/gesjdc.html">香港虚拟主机要不要备案吗</a> </li><li> <a href="/article/gesjcc.html">C语言中函数的调用能不能嵌套</a> </li><li> <a href="/article/gesjcd.html">匿名代理IP的分类介绍</a> </li><li> <a href="/article/gesjei.html">Smarty模板的优点有哪些</a> </li> </ul> </div> </div> </div> <footer> <div class="footop"> <div class="wrap"> <div class="bottomrpw"> <div class="erp arp"> <dl> <dt>ADDRESS</dt> <dd class="address"> <i class="icon"></i> <span class="word">成都市青羊区锦天国际1号楼1002室</span> </dd> </dl> </div> <div class="erp arp"> <dl> <dt>TEL</dt> <dd class="phonum"> <i class="icon"></i> <span class="word en"> <a href="tel:18980820575">18980820575</a> </span> </dd> </dl> </div> <div class="erp crp"> <dl> <dt>OTHER</dt> <dd> <a class="word get-quote">获得报价与方案</a> </dd> <dd> <a href="#" target="_blank" rel='nofollow' class="word" title="付款方式">付款方式</a> </dd> </dl> </div> <div class="erp code-rp"> <dl> <dt>Wechat</dt> <dd class="code-wrap"> <span class="code"> <img src="/Public/Home/images/qr-code.jpg" alt="快上网微信公众号" /> </span> </dd> </dl> </div> </div> </div> </div> <div class="footerbot"> <div class="friendlinks"> <div class="wrap"> <ul class="rpl"> <li><a href="http://www.sczjjygc.com/" title="中建建业环保" target="_blank">中建建业环保</a></li><li><a href="https://www.xwcx.net/jigui.html" title="成都服务器机柜租用" target="_blank">成都服务器机柜租用</a></li><li><a href="http://www.jyfdjzy.cn/" title="名片设计制作" target="_blank">名片设计制作</a></li><li><a href="http://chengdu.cdcxhl.com/seo/" title="成都网络营销" target="_blank">成都网络营销</a></li><li><a href="http://www.czyouth.cn/" title="水泥搅拌车" target="_blank">水泥搅拌车</a></li><li><a href="http://www.cdshujin.cn/" title="蜀锦在线" target="_blank">蜀锦在线</a></li><li><a href="http://www.cqcxhl.com/service/foreigntrade.html" title="重庆外贸网站建设" target="_blank">重庆外贸网站建设</a></li><li><a href="https://www.cdxwcx.com/city/nanchong/" title="南充网站建设" target="_blank">南充网站建设</a></li><li><a href="https://www.cdxwcx.com/wangzhan/mbshangcheng.html" title="商城网站" target="_blank">商城网站</a></li><li><a href="http://www.scjiangyou.cn/" title="江油网站建设" target="_blank">江油网站建设</a></li> </ul> </div> </div> <div class="wrap"> <div class="copyright"> <span class="en">©2007-2022</span> 成都快上网科技有限公司 <span class="en">ALL RIGHTS RESERVED.</span> <a rel="nofollow" href="http://www.miitbeian.gov.cn" target="_blank">蜀ICP备19037934号</a> </div> </div> </div> </footer> <div class="fcwrap"> <ul class="rpl clearfix"> <li class="phone"> <a rel="nofollow" target="_blank" href="tel:18980820575"> <i class="icon"></i> <strong>18980820575</strong> </a> </li> <li class="qq"> <a rel="nofollow" target="_blank" href="https://wpa.qq.com/msgrd?v=1&uin=244261566&site=qq&menu=yes"> <i class="icon"></i> <strong>244261566</strong> </a> </li> <li class="back-top"> <a href="javascript:void(0)" rel="nofollow" class="back-to-top"> <i class="icon"></i> <strong>回到顶部</strong> </a> </li> </ul> </div> <!--nav--> <div class="n-Wrap"> <div class="navBar visble show"> <div class="barlogo"> <a href="/" rel="nofollow"> <img src="/Public/Home/images/logo1.png" alt="成都做网站" /> <img src="/Public/Home/images/logo2.png" alt="成都网站设计" /> </a> </div> <div class="bmenu"> <i class="bar-top"><span></span></i> <i class="bar-cen"><span></span></i> <i class="bar-bom"><span></span></i> <i class="bar-left"><span></span></i> <i class="bar-right"><span></span></i> </div> </div> <section class="fixmenu"> <div class="close-bar"> <i class="bar-left"><span></span></i> <i class="bar-right"><span></span></i> </div> <nav class="smph"> <ul> <li class="index-hrefs on"><a href="http://www.cdweb.net/"><font>首页</font></a></li> <li><a href="/about/" rel="nofollow"><font>关于快上网</font></a></li> <li><a href="/service/" rel="nofollow"><font>服务范围</font></a></li> <li><a href="/case/" rel="nofollow"><font>案例展示</font></a></li> <li><a href="/solve/" rel="nofollow"><font>解决方案</font></a></li> <li><a href="/news/" rel="nofollow"><font>建站资讯</font></a></li> <li><a href="/contact/" rel="nofollow"><font>联系快上网</font></a></li> </ul> <div class="pwrap"> <span class="label">服务热线</span> <strong class="phone"><a href="tel:18980820575">18980820575</a></strong> </div> </nav> </section> </div> <!--end nav--> <script src="/Public/Home/js/hotcss.js"></script> <script type="text/javascript" src="/Public/Home/js/su_new.js"></script> </body> </html> <script> $(".con img").each(function(){ var src = $(this).attr("src"); 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