Python中的Xpath。 正在获取SyntaxError（“无效谓词”）

Question

import xml.etree.ElementTree as ET
tree = ET.parse('test.xml')

xpathobjects = tree.findall(".//BuildingNodeBase[name = 'Building name']")

I am wanting to pull a BuildingNodeBase with a child tag name that has value Building name .

But Getting:

SyntaxError("invalid predicate")

Answer 1

The XPath support in ElementTree is limited , but your type of expression is supported. It's just that you need to remove the extra spaces around the = :

.//BuildingNodeBase[name='Building name']

Answer 2

I use lxml but I guess you can adopt this for your use:

from lxml import etree

tree = etree.parse('test.xml')

xpathobjects = tree.xpath(".//BuildingNodeBase[@name = 'Building name']")