是否可以将bs4汤对象与lxml一起使用? [英] Is it possible to use bs4 soup object with lxml?
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问题描述
我正在尝试同时使用BS4和lxml因此，除了解析两次html页面之外，还有什么方法可以在lxml中使用汤对象，反之亦然?
I am trying to use both BS4 and lxml so instead of parsing html page twice, is there any way to use soup object in lxml or vice versa?
self.soup = BeautifulSoup(open(path), "html.parser")
我尝试将此对象与lxml这样使用
i tried using this object with lxml like this
doc = html.fromstring(self.soup)
这将引发错误 TypeError:预期的字符串或类似字节的对象
反正有这种用法吗?
推荐答案
我认为没有办法不通过字符串对象.
I don't think there is a way without going through a string object.
from bs4 import BeautifulSoup
import lxml.html
html = """
<html><body>
<div>
<p>test</p>
</div>
</body></html>
"""
soup = BeautifulSoup(html, 'html.parser')
# Soup to lxml.html
doc = lxml.html.fromstring(soup.prettify())
print (type(doc))
print (lxml.html.tostring(doc))
#lxml.html to soup
soup = BeautifulSoup(lxml.html.tostring(doc), 'html.parser')
print (type(soup))
print (soup.prettify())
输出:
<class 'lxml.html.HtmlElement'>
b'<html>\n <body>\n <div>\n <p>\n test\n </p>\n </div>\n </body>\n</html>'
<class 'bs4.BeautifulSoup'>
<html>
<body>
<div>
<p>
test
</p>
</div>
</body>
</html>
已更新，以回应评论:
您可以使用lxml.etree遍历doc对象:
You can use lxml.etree to iterate through the doc object:
# Soup to lxml.etree
doc = etree.fromstring(soup.prettify())
it = doc.getiterator()
for element in it:
print("%s - %s" % (element.tag, element.text.strip()))
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