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我想使用xpath表达式来获取属性的值。从lxml中选择属性值
我希望下面的工作
from lxml import etree
for customer in etree.parse('file.xml').getroot().findall('BOB'):
print customer.find('./@NAME')
但是这给出了一个错误:
Traceback (most recent call last):
File "bob.py", line 22, in <module>
print customer.find('./@ID')
File "lxml.etree.pyx", line 1409, in lxml.etree._Element.find (src/lxml/lxml.etree.c:39972)
File "/usr/local/lib/python2.7/dist-packages/lxml/_elementpath.py", line 272, in find
it = iterfind(elem, path, namespaces)
File "/usr/local/lib/python2.7/dist-packages/lxml/_elementpath.py", line 262, in iterfind
selector = _build_path_iterator(path, namespaces)
File "/usr/local/lib/python2.7/dist-packages/lxml/_elementpath.py", line 246, in _build_path_iterator
selector.append(ops[token[0]](_next, token))
KeyError: '@'
我错了期待这个工作?
正确,但是如果你想要“正式”的首选方式:使用'customer.get('NAME ')'(参见http://docs.python.org/library/xml.etree.elementtree.html#xml.etree.ElementTree.Element.attrib) – Steven 2011-05-25 18:49:40