How to read in every child tag and attribute from an element in xml using Python

Question

I am trying to read in every child tag and attribute from an element in an xml file. An example of the xml is listed below.

   <drCoreType Name="default">
      <ModelType Name="default">
         <ALTrVoltage Enable="No" Group="Other" Delay="0"/>
         <ALTrCurrent Enable="Yes" Group="Minor" Delay="0"/>
         <ALTrTeAmbient Enable="Yes" Group="Minor" Delay="5"/>
         <ALTrTeTankTop Enable="No" Group="Minor" Delay="5"/>
         <ALTrTeTankBottom Enable="No" Group="Minor" Delay="5"/>
         <ALTrTeCTO Enable="No" Group="Other" Delay="5"/>
         <ALTrTeCBO Enable="No" Group="Other" Delay="5"/>

it continues on for 100 more lines with 100 different tags. I am trying to read in each ModelType child, tag and attribute, into an array of objects with out searching for each name using .find("name"). Any ideas on how to do this? I'm stumped and google has not been too helpful.

What's the desired output? Also what have you tried so far?

user5955745
– user5955745

2017-09-14 20:14:52 +00:00
Commented Sep 14, 2017 at 20:14 — user5955745
– user5955745, Commented Sep 14, 2017 at 20:14

Julien Palard · Accepted Answer · 2017-09-14 22:18:38Z

1

It may be possible without, but I like xpath, so you can do it like this:

import sys
import pprint
from lxml import etree

with open(sys.argv[1]) as xml_file:
    tree = etree.parse(xml_file)

pprint.pprint([(element.tag, element.attrib) for element in
       tree.xpath('//drCoreType/ModelType/*')])

This give:

[('ALTrVoltage', {'Enable': 'No', 'Group': 'Other', 'Delay': '0'}),
 ('ALTrCurrent', {'Enable': 'Yes', 'Group': 'Minor', 'Delay': '0'}),
 ('ALTrTeAmbient', {'Enable': 'Yes', 'Group': 'Minor', 'Delay': '5'}),
 ('ALTrTeTankTop', {'Enable': 'No', 'Group': 'Minor', 'Delay': '5'}),
 ('ALTrTeTankBottom', {'Enable': 'No', 'Group': 'Minor', 'Delay': '5'}),
 ('ALTrTeCTO', {'Enable': 'No', 'Group': 'Other', 'Delay': '5'}),
 ('ALTrTeCBO', {'Enable': 'No', 'Group': 'Other', 'Delay': '5'})]

answered Sep 14, 2017 at 22:18

Julien Palard

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2 Comments

Akkarris Over a year ago

This is exactly what I was looking for. Thank you for your help!

Julien Palard Over a year ago

@Akkarris you're welcome, don't hesitate to flag as answered if it's worth it.

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