011 Python 爬虫库安装简单使用

# Python 爬虫基础知识
  ● Python 爬虫基础知识
    安装爬虫库
      beautifulsoup4
        pip install beautifulsoup4

      lxml HTML 解析器
        pip install html5lib

      html5lib
        pip install html5lib

  ● 使用库
    设置 encoding='utf-8' 编码

 1 # -*- coding: UTF-8 -*-
 2 from bs4 import BeautifulSoup
 3 import lxml
 4 html_file = open('text.html',encoding='utf-8')
 5 
 6 soup = BeautifulSoup(html_file, "lxml")
 7 
 8 for item in soup.find_all('span'):
 9     print(item.attrs)
10 
11 html_file.close()
12     
原文地址:https://www.cnblogs.com/sdk123/p/7242949.html