Parsing XML with Pykml

2024/11/18 11:45:08

I have the following xml file I got from QGIS

    <?xml version="1.0" encoding="UTF-8"?><kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom"><Document><name>stationpivot.kml</name><StyleMap id="default0"><Pair><key>normal</key><styleUrl>#default</styleUrl></Pair><Pair><key>highlight</key><styleUrl>#hl</styleUrl></Pair></StyleMap><Style id="hl"><IconStyle><scale>0.7</scale><Icon><href>http://maps.google.com/mapfiles/kml/shapes/placemark_circle_highlight.png</href></Icon></IconStyle><LabelStyle><scale>0.7</scale></LabelStyle></Style><Style id="default"><IconStyle><scale>0.7</scale><Icon><href>http://maps.google.com/mapfiles/kml/shapes/placemark_circle.png</href></Icon></IconStyle><LabelStyle><scale>0.7</scale></LabelStyle></Style><Folder><name>stationXML</name><open>1</open><Placemark><name>2</name><Snippet maxLines="0"></Snippet><description><![CDATA[<html><body><table border="1">
<tr><th>Field Name</th><th>Field Value</th></tr>
<tr><td>Latitude</td><td>26.719803</td></tr>
<tr><td>Longitude</td><td>40.861876</td></tr>
<tr><td>Name</td><td>REALNAME2</td></tr>
<tr><td>Vegetation</td><td>v_type2</td></tr>
<tr><td>Description</td><td>text text text text</td></tr>
<tr><td>Time Description</td><td>time time time </td></tr>
</table></body></html>]]></description><styleUrl>#default0</styleUrl><Point><gx:drawOrder>1</gx:drawOrder><coordinates>40.861876,26.71980299999999,0</coordinates></Point></Placemark><Placemark><name>3</name><Snippet maxLines="0"></Snippet><description><![CDATA[<html><body><table border="1">
<tr><th>Field Name</th><th>Field Value</th></tr>
<tr><td>Latitude</td><td>46.745151</td></tr>
<tr><td>Longitude</td><td>10.788845</td></tr>
<tr><td>Name</td><td>REALNAME3</td></tr>
<tr><td>Vegetation</td><td>v_type3</td></tr>
<tr><td>Description</td><td>text text text text</td></tr>
<tr><td>Time Description</td><td>time time time</td></tr>
</table></body></html>]]></description><styleUrl>#default0</styleUrl><Point><gx:drawOrder>1</gx:drawOrder><coordinates>40.788845,26.74515100000001,0</coordinates></Point></Placemark></Folder></Document></kml>

I would like to recursively substitute the value "2" in the

 <name>2</name><name>3</name>

field using the information included in the "description" field REALNAME2 in order to have

<name>REALNAME2</name>
<name>REALNAME3</name>

respectively as final output in my kml

any suggestions?

Answer

I recommend you to use the element tree API together with XPath. It's quite easy to use and very powerful. It will enable you to do what you want:

import xml.etree.ElementTree as ETroot = ET.fromstring(<your KML as string>)
name_list = root.findall(".//Placemark/name")
for name in name_list:name.text = "Some new text"
https://en.xdnf.cn/q/118684.html

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