I have an xml file - here is a snippet..

 <gmd_fileIdentifier> <gco_CharacterString>{0328cb65-b564-495a-b17e-e49e04864ab7}</gco_CharacterString> </gmd_fileIdentifier> <gmd_identifier> <gmd_RS_Identifier> <gmd_authority gco_nilReason="missing" /> <gmd_code> <gco_CharacterString>0000</gco_CharacterString> </gmd_code> <gmd_codeSpace xmlns:gml="" xmlns:msxsl="urn:schemas-microsoft-com:xslt"> <gco_CharacterString>test</gco_CharacterString> </gmd_codeSpace> </gmd_RS_Identifier> </gmd_identifier>

What I want to do is change the value of 0000 which is currently in the tag, to the gmd_fileIdentifier character string {0328cb65-b564-495a-b17e-e49e04864ab7}.

I can access the values, using the following python code, but how do I set the value? Current code

import os, sys
from lxml import etree
myXML = r"D:\test.xml"
tree = etree.parse(myXML)
root = tree.getroot()
root.xpath("//gmd_fileIdentifier/gco_CharacterString/text()")
print fileID
code = root.xpath("//gmd_identifier/gmd_RS_Identifier/gmd_code/gco_CharacterString/text()")
print code

Thanks

1 Answer

You'll have to query the whole node instead of only its contents:

code = root.xpath('//gmd_identifier/gmd_RS_Identifier/gmd_code/gco_CharacterString')

Then, if it matched, just replace its text and save back to the XML file:

if code: # Replaces <gco_CharacterString> text code[0].text = '{0328cb65-b564-495a-b17e-e49e04864ab7}' # Save back to the XML file etree.ElementTree(root).write('D:\test.xml', pretty_print=True)

That's all! :)

3

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