Python 如何遍历etree.findall()中的列表

Python 如何遍历etree.findall()中的列表,python,lxml,python-3.3,Python,Lxml,Python 3.3,我想做下面的工作,但有一个困难的时间。如何在for循环中通过ns ns = ['one', 'two'] tree = etree.parse(file) for items in tree.findall('.//' + ns): print(items) 编辑: 正在寻找没有嵌套for循环的解决方案 编辑: 使用: 你用哪一个:lxml/xml.etree.ElementTree?我用的是lxml.etreegettinglxml.etree.xpathevaleror:Inv

我想做下面的工作,但有一个困难的时间。如何在for循环中通过
ns

ns = ['one', 'two']

tree = etree.parse(file) 
for items in tree.findall('.//' + ns):
    print(items)
编辑: 正在寻找没有嵌套for循环的解决方案

编辑:

使用:


你用哪一个:
lxml
/
xml.etree.ElementTree
?我用的是lxml.etreegetting
lxml.etree.xpathevaleror:Invalid expression
@user1991424,你能发布(或上传)所用的xml吗?当然,它相当大。2.6mb@user1991424,将xml上传到某个地方,并告诉我url。@user1991424,
ns
的实际值是多少?似乎不存在
一个
两个
标记。
   ns = ['{http://purl.org/dc/elements/1.1/}identifier[@{http://www.w3.org/2001/XMLSchema-instance}type]',
           '{http://purl.org/dc/elements/1.1/}title',
           '{http://purl.org/dc/elements/1.1/}description',
           '{http://purl.org/dc/elements/1.1/}subject',
           '{http://purl.org/dc/elements/1.1/}type',
           '{http://purl.org/dc/terms/}educationLevel']
   tree = etree.parse(file)
   for leaf in tree.xpath('//*[local-name()="record"]'):
       for items in leaf.findall('.//' + ns[0]):
           print(items)
from lxml import etree

nsmap = {
    'xmlns': 'http://www.openarchives.org/OAI/2.0/',
    'dc': 'http://purl.org/dc/elements/1.1/',
    'dct': 'http://purl.org/dc/terms/',
    'xsi': 'http://www.w3.org/2001/XMLSchema-instance',
}
ns = [
    'dc:identifier[@xsi:type]',
    'dc:title',
    'dc:description',
    'dc:subject',
    'dc:type',
    'dct:educationLevel'
]
tree = etree.parse(file)
xpath = '|'.join('.//xmlns:record//{}'.format(n) for n in ns)
for items in tree.xpath(xpath, namespaces=nsmap):
    print(items)