原教程來源於imooc
鏈接地址：http://www.imooc.com/learn/563
1、BeautifulSoup的安裝
- 安裝pip，Pycharm自帶pip，不用安裝
- 檢查pip是否已安裝，進入
D:\Python\Scripts，用dir命令查看pip是否存在。 - 用
pip install bs4命令，安裝bs4 - 安裝成功
2、實例測試
from bs4 import BeautifulSoup
import re
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>
"""
soup = BeautifulSoup(html_doc, 'html.parser', from_encoding='utf-8')
print("獲取所有的鏈接")
links = soup.find_all('a')
for link in links:
print(link.name, link['href'], link.get_text())
print("獲取lacie鏈接")
link_node = soup.find('a', href='http://example.com/lacie')
print(link_node.name, link_node['href'], link_node.get_text())
print("正則匹配")
link_node = soup.find('a', href=re.compile(r"ill"))
print(link_node.name, link_node['href'], link_node.get_text())
print("獲取p段落文字")
p_node = soup.find('p', class_='title')
print(p_node.name, p_node.get_text())
測試結果：
