lxml

Question

我有一个包含大量地标和 2 个文件夹的 KML。如何使用 etree 定位每个地标并将其移动到相应的文件夹中。例如，代码应该查找元素“SimpleData name='id'”并选择 'Region 1'，然后将整个 Plaemark 移动到文件夹 Area 1.

之前：

<Folder>
    <name>Cluster</name>
    <Folder>Area 1</Folder>
    <Folder>Area 2</Folder>
    <Placemark>
        <styleUrl>#falseColor9</styleUrl>
        <name>Customer 1</name>
        <ExtendedData>
            <SimpleData name="id">Region 1</SimpleData>
        </ExtendedData>
    </Placemark>
    <Placemark>
        <styleUrl>#falseColor8</styleUrl>
        <name>Customer 1</name>
        <ExtendedData>
            <SimpleData name="id">Region 2</SimpleData>
        </ExtendedData>
    </Placemark>    
</Folder>

之后：

<Folder>
    <name>Cluster</name>
    <Folder>Area 1</Folder>
        <Placemark>
            <name>Customer 1</name>
            <styleUrl>#falseColor9</styleUrl>           
            <ExtendedData>
                <SimpleData name="id">Region 1</SimpleData>
            </ExtendedData>
        </Placemark>
    <Folder>Area 2</Folder>
        <Placemark>
            <styleUrl>#falseColor8</styleUrl>
            <name>Customer 1</name>
            <ExtendedData>
                <SimpleData name="id">Region 2</SimpleData>
            </ExtendedData>
        </Placemark>    
</Folder>

如有任何帮助，我们将不胜感激。

Answer 1

使用 lxml，可以这样做：

from lxml import etree
marks = """[your xml above]"""
doc = etree.XML(marks.encode())
for region in doc.xpath('//SimpleData'):
    target = region.text.split(' ')[1].strip()
    dests = doc.xpath('//Folder//Folder')
    for dest in dests:
        if target in dest.text:
            move =region.xpath('ancestor::Placemark')[0]
            dest.addnext((move))
print(etree.tostring(doc).decode())

输出：

<Folder>
   <name>Cluster</name>
   <Folder>Area 1</Folder>
    <Placemark>
      <styleUrl>#falseColor9</styleUrl>
      <name>Customer 1</name>
      <ExtendedData>
         <SimpleData name="id">Region 1</SimpleData>
      </ExtendedData>
   </Placemark>
   
   <Folder>Area 2</Folder>
   <Placemark>
      <styleUrl>#falseColor8</styleUrl>
      <name>Customer 1</name>
      <ExtendedData>
         <SimpleData name="id">Region 2</SimpleData>
      </ExtendedData>
   </Placemark>
   </Folder>

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