数据解析——BeautifulSoup4

⼀、简介

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bs4全称：beautifulsoup4，意思为美丽的汤版本4。

官⽅⽂档 Beautiful Soup 4.4.0 文档 — Beautiful Soup 4.2.0 中文 文档

可以在HTML或XML⽂件中提取数据的⽹⻚信息提取库。

bs4是依赖lxml库的，只有先安装lxml库才可以安装bs4库。

二.bs4基本使⽤

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1.安装

命令：

pip install bs4 -i https://pypi.douban.com/simple/

2.语法

（1）创建⼀个soup对象

from bs4 import BeautifulSoup
 
html_doc = """
    
    
The Dormouse's story
    
    
Once upon a time there were three little sisters; and their names were
    Elsie,
    Lacie and
    Tillie;
    and they lived at the bottom of a well.
    
    
...
"""
# print(html_doc)
 
# 解析BeautifulSoup对象
soup = BeautifulSoup(html_doc)
print(soup)