如何使用lxml、XPath和Python从网页中提取链接？
我有一个xpath查询：如何使用lxml、XPath和Python从网页中提取链接？,python,screen-scraping,hyperlink,lxml,extraction,Python,Screen Scraping,Hyperlink,Lxml,Extraction,我有一个xpath查询： /html/body//tbody/tr[*]/td[*]/a[@title]/@href 它提取所有带有title属性的链接，并在中给出href 但是，我似乎无法将它与lxml一起使用 from lxml import etree parsedPage = etree.HTML(page) # Create parse tree from valid page. # Xpath query hyperlinks = parsedPage.xpath("/html/
/html/body//tbody/tr[*]/td[*]/a[@title]/@href
hreflxmlfrom lxml import etree
parsedPage = etree.HTML(page) # Create parse tree from valid page.
# Xpath query
hyperlinks = parsedPage.xpath("/html/body//tbody/tr[*]/td[*]/a[@title]/@href")
for x in hyperlinks:
print x # Print links in <a> tags, containing the title attribute
从lxml导入etree
parsedPage=etree.HTML（页面）#从有效页面创建解析树。
#Xpath查询
hyperlinks=parsedPage.xpath（“/html/body//tbody/tr[*]/td[*]/a[@title]/@href”）
对于超链接中的x：
打印x#打印标签中包含标题属性的链接
lxml如何获取Python下包含属性标题的超链接的
hreflxmlfrom lxml import html, etree
from StringIO import StringIO
html_string = '''<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head/>
<body>
<table border="1">
<tbody>
<tr>
<td><a href="http://stackoverflow.com/foobar" title="Foobar">A link</a></td>
</tr>
<tr>
<td><a href="http://stackoverflow.com/baz" title="Baz">Another link</a></td>
</tr>
</tbody>
</table>
</body>
</html>'''
tree = etree.parse(StringIO(html_string))
print tree.xpath('/html/body//tbody/tr/td/a[@title]/@href')
>>> ['http://stackoverflow.com/foobar', 'http://stackoverflow.com/baz']
从lxml导入html，etree
从StringIO导入StringIO
html_字符串=“”
'''
tree=etree.parse（StringIO（html_字符串））
print tree.xpath（'/html/body//tbody/tr/td/a[@title]/@href'））
>>> ['http://stackoverflow.com/foobar', 'http://stackoverflow.com/baz']
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