在Python中,選擇合適的網頁解析庫取決于你的具體需求和偏好。以下是一些推薦的解析庫及其特點:
html.parser
、lxml
和html5lib
,適合初學者和大多數解析任務。pip install beautifulsoup4
from bs4 import BeautifulSoup
html_doc = """
<html><head><title>Example Page</title></head>
<body>
<h1>Example Heading</h1>
<p>Example paragraph.</p>
</body></html>
"""
soup = BeautifulSoup(html_doc, 'html.parser')
print(soup.title.string)
pip install lxml
from lxml import etree
html_doc = """
<html><head><title>Example Page</title></head>
<body>
<h1>Example Heading</h1>
<p>Example paragraph.</p>
</body></html>
"""
parser = etree.HTMLParser()
tree = etree.fromstring(html_doc, parser)
print(tree.findtext('.//title'))
pip install requests-html
from requests_html import HTMLSession
session = HTMLSession()
response = session.get('https://example.com')
response.html.render() # 渲染JavaScript
print(response.html.title)
選擇哪個庫取決于你的具體需求,比如解析速度、XPath支持、處理JavaScript的能力等。通常,Beautiful Soup適合大多數情況,而lxml則適合需要高效解析和復雜元素定位的場景。Requests-HTML則是一個全能的選擇,特別是當你需要處理JavaScript動態內容時。