python 包之 PyQuery 网页解析教程
一、安装
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是一个非常强大又灵活的网页解析库
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PyQuery 是 Python 仿照 jQuery 的严格实现
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语法与 jQuery 几乎完全相同，更多操作可以参考jQuery
pip install pyquery二、字符串初始化
html = '''
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'''
from pyquery import PyQuery as pq
doc = pq(html)
print(doc)
print(type(doc))
print(doc('li'))三、url初始化
from pyquery import PyQuery as pq
doc = pq(url="http://www.baidu.com", encoding='utf-8')
print(doc('head')四、文件初始化
from pyquery import PyQuery as pq
doc = pq(filename='index.html')
print(doc)五、css选择器
html = '''
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'''
from pyquery import PyQuery as pq
doc = pq(html)
print(doc('#container .fadeIn'))六、查找子元素
html = '''
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'''
from pyquery import PyQuery as pq
doc = pq(html)
items = doc('#container')
lis = items.find('li')
print(type(lis))
print(lis)七、兄弟元素
html = '''
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'''
from pyquery import PyQuery as pq
doc = pq(html)
div = doc('#container .post-thumb')
print(div.siblings())八、获取属性
html = '''
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'''
from pyquery import PyQuery as pq
doc = pq(html)
a = doc('#container .post-content a')
print(a)
print(a.attr('href'))
print(a.attr.href)九、获取文本
html = '''
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'''
from pyquery import PyQuery as pq
doc = pq(html)
a = doc('#container .post-content a').text()
print(a)十、类操作
html = '''
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'''
from pyquery import PyQuery as pq
doc = pq(html)
li = doc('#container li')
print(li)
li.removeClass('fadeIn')
print(li)
li.addClass('fadeIn')
print(li)