Basic Operations of BeautifulSoup

>>> from bs4 import BeautifulSoup   #导入

>>> soup = BeautifulSoup(url.content,"lxml") 

>>> print(soup.prettify) #Formatting cost

>>> print(soup.title.string)
Zhengzhou Institute of Light Industry OJ #Print title

>>> print(soup.title)
<title>OJ of Zhengzhou Institute of Light Industry</title>

Tag selector:

>>> print(soup.a)
<a class="navbar-brand" href="./" style="font-weight:bold;">Zhengzhou Institute of Light Industry OJ</a>

>> print(soup.title.name)
title

Take zuli's zcm network as the grabbing object:

>>> print(soup.div.attrs['class'])
['container']
>>> print(soup.nav.attrs['class'])
['navbar', 'navbar-default']
>>> print(soup.nav.attrs['role'])
navigation

 

(You can use this method to get the corresponding content after the label)

The rest of the writing:

>>> print(soup.nav['role'])
navigation