Data of the road - Python Reptile - PyQuery library

First, what is PyQuery?

PyQuery library is also a very powerful and flexible web-parsing library.

Official website address: http://pyquery.readthedocs.io/en/latest/

 Two, PyQuery basic library use

html = '''
<div> 
　　<ul> 
　　　　<li class="item-0">first item<lli> 
　　　　<li class="item-1"><a href="link2.html"＞second item</a><lli> 
　　　　<li class="item-0 active"><a href="link3.html"><span class="bold"＞third item</span></a></li> 
　　　　<li class ="item-1 active"><a href="link4 . html">fourth item</a></li> 
　　　　<li class="item-0"＞＜a href="link5.html">fifth item</a></li> 
　　</ul> 
</div>
'''

1. Initialization

# Initialization string 
from pyquery Import pyquery AS PQ 
HTML = "" 
DOC = PD (HTML)
 Print (DOC ( ' Li ' )) 

# the URL initialized 
from pyquery Import pyquery AS PQ 
HTML = "" 
DOC = PQ (URL = ' HTTPS : //cuiqingcai.com ') 
Print (DOC (' title ' )) 

# file initialization 
from   pyquery Import   pyquery AS PQ 
HTML = "" 
DOC= pq(filename=’demo.html’) 
print(doc(’li’))  

2.CSS selector - Get tag

from pyquery import PyQuery as pq
doc = pd(html)

# 子元素
items = doc('.list')
lis = items.find('li')

lis = items.children()
lis = items.children('.active')
print(lis)

# 父元素
items = doc('.list')
container =items.parents()
print(container)

parent = items.parents('.wrap')
print(parent)

# 兄弟元素
li = doc('.list.item-0.active')
print(li.siblings())
print(li.siblings('.active'))

3.CSS Selector - get property

from pyquery import PyQuery as pq
doc = pd(html)
a = doc('.item-0.active a')
print(a)
print(a.attr.href)
print(a.attr('href')

4. Get Content

from pyquery import PyQuery as pq
doc = pd(html)
a = doc('.item-0.active a')
print(a)
print(a.text())

5. Get HTML

from pyquery import PyQuery as pq
doc = pd(html)
li = doc('.item-0.active')
print(li)
print(li.html())