Change the key value in XML using Python

Question

I need to modify the online_hostname key value in XML using python. I tried xml element tree but it does not work.

import xml.etree.ElementTree as ET

xml_tree = ET.parse('test.xml')
root = xml_tree.getroot()
root[0][0] = "requiredvalue"

test.xml file is as below:

<?xml version="1.0" encoding="UTF-8" ?>
<bzinfo>
    <myidentity online_hostname="testdevice-air_2022_01_25" 
                bzlogin="[email protected]" />
</bzinfo>

Error:

IndexError: child assignment index out of range

DeepSpace · Accepted Answer · 2022-01-27 12:05:05Z

1

It is much better to explicitly search the required node (find will do in this case) instead of using indexes on the root node:

import xml.etree.ElementTree as ET

xml_tree = ET.parse('test.xml')
root = xml_tree.getroot()

myidentity_node = root.find('myidentity')
myidentity_node.attrib['online_hostname'] = 'required_value'

xml_tree.write('modified.xml')

modified.xml after running this code:

<bzinfo>
    <myidentity bzlogin="[email protected]" online_hostname="required_value" />
</bzinfo>

answered Jan 27, 2022 at 12:05

DeepSpace

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2 Comments

Karthikeyan M Over a year ago

It works. Thank you. Can we do the same in bash script?

Karthikeyan M Over a year ago

Can we do the same in bash script? We are finding issues with Python Mac? Thanks.

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