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I. Introduction
In the previous section " https://blog.csdn.net/LaoYuanPython/article/details/113091721 Python crawler entry 7: HTML message parsing to obtain basic information of web pages " introduced the use of BeautifulSoup to install, import, create objects and obtain basic web pages For information related content, this section introduces the use of BeautifulSoup objects to access related tag data after importing.
The content of the c:\temp\s1.html file processed in the case of this section is as follows:
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<style type="text/css"> .textline{color:blue;}</style>
<link href="https://blog.csdn.net/LaoYuanPython/article/details/95360624" rel="canonical"/>
<title>BeautifulSoups使用方法 - 老猿Python - CSDN博客 </title></head>
<body&g