CODEWITHSUNDEEP
python
Sreeni Puthiyillam
Sreeni Puthiyillam

Reputation: 485

How to insert a child subelement in Python ElementTree

My xml :-

<users>
</users>

i need to just append a child element :-

<users>
<user name="blabla" age="blabla" ><group>blabla</group>
</users>

My code giving some error :(

import xml.etree.ElementTree as ET
doc = ET.parse("users.xml")
root_node = doc.find("users")
child = ET.SubElement(root_node, "user")
child.set("username","srquery")
group  = ET.SubElement(child,"group")
group.text = "fresher"
tree = ET.ElementTree(root_node)
tree.write("users.xml")

I missed out "append" , but i don't have idea where to add that. Thanks in advance.

Upvotes: 3

Views: 25568

Answers (2)

Don Question
Don Question

Reputation: 11624

A slightlly modified version to explain what happens:

root = ET.fromstring('<users></users>') # same as your doc=ET.parse(...).find(...), btw. doc=root
el = ET.Element('group')   # creating a new element/xml-node
root.append(el)            # and adding it to the root

ET.tostring(root)
>>> '<users><group /></users>'
el.text = "fresher"        # adding your text
ET.tostring(root)
>>>  '<users><group>fresher</group></users>'

Upvotes: 3

Kenan Banks
Kenan Banks

Reputation: 212078

Change this line 

root_node = doc.find("users")

...to this line 

root_node = doc.getroot()

The key takeaway here is that doc is already a reference to the root node, and is accessed with getroot(). doc.find('users') will not return anything, since users is not a child of the root, it's the root itself.

Upvotes: 2

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