Question

这是xml，

<Faculty>
    <facultyMember>
        <FirstName>A</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>B</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>C</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>D</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>E</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>F</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>G</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>H</FirstName>
    </facultyMember>

</Faculty>

我希望通过提供nodes来获取此xml index，

例如如果我向3提供6，则输出应该是，

    <facultyMember>
        <FirstName>C</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>D</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>E</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>F</FirstName>
    </facultyMember>

如何使用etree python？

执行此操作

Answer 1

我们的想法是找到所有facultyMember项并使用python的列表切片：

from xml.etree import ElementTree as ET


data = """<Faculty>
    <facultyMember>
        <FirstName>A</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>B</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>C</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>D</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>E</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>F</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>G</FirstName>
    </facultyMember>
    <facultyMember>
        <FirstName>H</FirstName>
    </facultyMember>

</Faculty>"""

tree = ET.fromstring(data)
begin, end = 3, 6

for element in tree.findall('.//facultyMember')[begin - 1: end]:
    print ET.tostring(element).strip()

打印：

<facultyMember>
        <FirstName>C</FirstName>
    </facultyMember>
<facultyMember>
        <FirstName>D</FirstName>
    </facultyMember>
<facultyMember>
        <FirstName>E</FirstName>
    </facultyMember>
<facultyMember>
        <FirstName>F</FirstName>
    </facultyMember>

通过指定limit来从xml获取节点

1 个答案: