我有一个Debian 6设置,我不会碰太多。
$ python --version
Python 2.6.6
$ dpkg --list|grep lxml
ii python-lxml 2.2.8-2
我试图像这样访问XPath:
import xml.etree.ElementTree as ET
root = ET.parse("a.xml")
for e in root.findall('.//rec/data/field[@name="id"]'):
print(e.tag + " " + e.attrib.get('name'))
我收到了错误
Traceback (most recent call last):
File "a.py", line 4, in <module>
for e in root.findall('.//rec/data/field[@name="id"]'):
File "/usr/lib/python2.6/xml/etree/ElementTree.py", line 647, in findall
return self._root.findall(path)
File "/usr/lib/python2.6/xml/etree/ElementTree.py", line 355, in findall
return ElementPath.findall(self, path)
File "/usr/lib/python2.6/xml/etree/ElementPath.py", line 198, in findall
return _compile(path).findall(element)
File "/usr/lib/python2.6/xml/etree/ElementPath.py", line 176, in _compile
p = Path(path)
File "/usr/lib/python2.6/xml/etree/ElementPath.py", line 93, in __init__
"expected path separator (%s)" % (op or tag)
SyntaxError: expected path separator ([)
python-lxml 2.2.8不支持这种XPath语法吗?
哪个版本支持这个并且与python 2.6兼容?
答案 0 :(得分:1)
代码使用的是ElementTree
,而不是lxml
。
findall
的{{1}}方法仅支持xpath的子集。 (XPath support in ElementTree)。
ElementTree API 1.3也支持 ElementTree
。 但 ElementTree API在Python 2.7 中更新为1.3。
替换以下行:
[@attrib="value"]
使用:
import xml.etree.ElementTree as ET
使用import lxml.etree as ET
。