BeautifulSoup

時間 2019-11-17

標籤 beautifulsoup 简体版

原文原文鏈接

Beautiful Soup 是用Python寫的一個HTML/XML的解析器，它能夠很好的處理不規範標記並生成剖析樹(parse tree)。它提供簡單又經常使用的導航（navigating），搜索以及修改剖析樹的操做。它能夠大大節省你的編程時間。html

# -*- coding:utf-8 -*-

#導入所須要的模塊
from bs4 import BeautifulSoup
import re

#一段html的字符串
html_doc = """
<html><head><title>The Dormouse's story</title></head>
<body>
<p class="title"><b>The Dormouse's story</b></p>

<p class="story">Once upon a time there were three little sisters; and their names were
<a href="http://example.com/elsie" class="sister" id="link1">Elsie</a>,
<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;
and they lived at the bottom of a well.</p>

<p class="story">...</p>
"""

#建立beautifulsoup對象
soup = BeautifulSoup(html_doc, 'html.parser', 
    from_encoding = 'utf-8')

#查找html文檔中出現的全部連接
print '獲取全部的連接:'
links = soup.find_all('a')
for link in links:
    print link.name, link['href'], link.get_text()

#查找html文檔中lacie的連接
print '獲取lacie的連接:'
link_node = soup.find('a', href = 'http://example.com/lacie')
print link_node.name, link_node['href'], link_node.get_text()

#利用正則表達式進行模糊匹配
print '正則模糊匹配:'
link_node = soup.find('a', href = re.compile(r"ill"))
print link_node.name, link_node['href'], link_node.get_text()

#獲取標題的文字
print '獲取p段落文字:'
link_node = soup.find('p', class_ = "title")
print link_node.name, link_node.get_text()

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