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问题:

Can someone explain why the first call to root.cssselect() works, while the second fails?

from lxml.html import fromstring from lxml import etree  html='<html><a href="http://example.com">example</a></html' root = fromstring(html) print 'via fromstring', repr(root) # via fromstring <Element html at 0x...> print root.cssselect("a")  root2 = etree.HTML(html) print 'via etree.HTML()', repr(root2) # via etree.HTML() <Element html at 0x...> root2.cssselect("a") # --> Exception

I get:

Traceback (most recent call last):   File "/home/foo_eins_d/src/foo.py", line 11, in <module>     root2.cssselect("a") AttributeError: 'lxml.etree._Element' object has no attribute 'cssselect'

Version: lxml==3.4.4

回答1:

The difference is in the type of element. Example -

In [12]: root = etree.HTML(html)  In [13]: root = fromstring(html)  In [14]: root2 = etree.HTML(html)  In [15]: type(root) Out[15]: lxml.html.HtmlElement  In [16]: type(root2) Out[16]: lxml.etree._Element

lxml.html.HTMLElement has the method cssselect() . Also, HTMLElement is a subclass of etree._Element .

But the lxml.etree._Element does not have that method.

If you want to parse html, you should use lxml.html.

文章来源: lxml: cssselect(): AttributeError: 'lxml.etree._Element' object has no attribute 'cssselect'

标签

lxml

element

lxml: cssselect(): AttributeError: &#039;lxml.etree._Element&#039; object has no attribute &#039;cssselect&#039;

问题:

回答1:

lxml: cssselect(): AttributeError: 'lxml.etree._Element' object has no attribute 'cssselect'