Parsing nested attributes

Question

Good day dear developers. I can't fully parse an xml file.

The structure looks like:

<foo>
   <bar1 id="1">
      <bar2>
        <foobar id="2">name1</foobar>
        <foobar id="3">name2</foobar>
     </bar2>
   </bar1>
</foo>

I used the xml.etree library so I use code like:

source.get('Id')

so i get the first attribute

to get a nested tag i use code like: source.find('bar/foobar').text

The question is how to get next nested attributes? ( Id =2 and id = 3) It shows an error when i'm trying to use some stuff with slash source.get('bar/id') and other tries give me just the first attribute which i already got, also the second nested attribute has the same name Id.

Thank you for the help in advance.

You want us to help you, right? So don't say "It shows an error when I'm trying to use some stuff...". Tell us exactly what you did and exactly how it failed, and then we can help you. — Michael Kay
– Michael Kay, Commented Jan 1, 2020 at 22:12

balderman · Accepted Answer · 2020-01-02 09:55:01Z

1

Below is a working example

import xml.etree.ElementTree as ET

xml = '''<foo>
   <bar1 id="1">
      <bar2>
        <foobar id="2">name1</foobar>
        <foobar id="3">name2</foobar>
     </bar2>
   </bar1>
</foo>'''

root = ET.fromstring(xml)
ids = [f.attrib.get('id') for f in root.findall('.//foobar')]
print(ids)

output

['2','3']

answered Jan 2, 2020 at 9:55

balderman

24k8 gold badges39 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Maurice Meyer · Accepted Answer · 2020-01-01 18:13:23Z

1

You need to specify a working XPATH expression, like:

foobars = source.findall('bar1/bar2/foobar')
for elem in foobars:
    print(elem.get('id'))

Output:

2
3

answered Jan 1, 2020 at 18:13

Maurice Meyer

18.2k4 gold badges36 silver badges55 bronze badges

Comments

Igrecolla · Accepted Answer · 2020-01-09 12:52:50Z

0

It works now for one line, but what if we have several bar1? Like this

<foo>
   <bar1 id="1">
      <bar2>
        <foobar id="2">name1</foobar>
        <foobar id="3">name2</foobar>
     </bar2>
   </bar1>
   <bar1 id="2">
      <bar2>
        <foobar id="2">name3</foobar>
        <foobar id="3">name4</foobar>
     </bar2>
   </bar1>
</foo>

The loop (findall=> for)will print all of it(4 ids), but i need just 2 of them for each row

answered Jan 9, 2020 at 12:52

Igrecolla

859 bronze badges

Collectives™ on Stack Overflow

Parsing nested attributes

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related