使用ElementTree库

Question

我正在尝试解析xml数据，以便在python 3中使用ElementTree库打印其内容。但是当我打印lst时，它会返回一个空列表。

  

错误：返回列表的空数组。

我的尝试：

import xml.etree.ElementTree as ET
data = '''
    <data>
        <country name="Liechtenstein">
            <rank>1</rank>
            <year>2008</year>
            <gdppc>141100</gdppc>
            <neighbor name="Austria" direction="E"/>
            <neighbor name="Switzerland" direction="W"/>
        </country>
        <country name="Singapore">
            <rank>4</rank>
            <year>2011</year>
            <gdppc>59900</gdppc>
            <neighbor name="Malaysia" direction="N"/>
        </country>
    </data>'''

tree = ET.fromstring(data)
lst = tree.findall('data/country')
print(lst)
#for item in lst:
#    print('Country: ', item.get('name'))

提前致谢。

Answer 1

树已经引用了根项<data>，因此它不应该在您的路径语句中。只需找到＆＃34; country＆＃34;。

import xml.etree.ElementTree as ET
data = '''
    <data>
        <country name="Liechtenstein">
            <rank>1</rank>
            <year>2008</year>
            <gdppc>141100</gdppc>
            <neighbor name="Austria" direction="E"/>
            <neighbor name="Switzerland" direction="W"/>
        </country>
        <country name="Singapore">
            <rank>4</rank>
            <year>2011</year>
            <gdppc>59900</gdppc>
            <neighbor name="Malaysia" direction="N"/>
        </country>
    </data>'''

tree = ET.fromstring(data)
lst = tree.findall('data/country')
print(lst)

# check position in tree
print(tree.tag)
print(tree.findall('country'))