Find grandparent node with Python and lxml using xpath()

Question

Is there a method to get a parent node with .xpath for item of type Element()?

I has HTML like this:

<table> ...
   <tr><td>...</td></tr>
   <tr><td><h3 class="product_name">Product</h3></td></tr>
</table>

I want to get a table element, where table is the first parent element for h3 of table 'table'.

from lxml.html import fromstring

html = fromstring
for h3 in html.xpath('//h3[@class="product_name"]'):
  parent_table = h3.xpath('???')

What xpath should I use?

Answer 1

./ancestor::table[1]

这将获得相对于上下文节点最近（宏）父/祖先的table元素。