create specific XML file from XSD file with python

Question

I have an existing xsd schema, and need to create (hopefully with Python) an XML file with some specific inputs. What is the best way to do it? I tried Element Tree and xmlschema, but I cannot tell if these allow to generate XML files starting from a known XSD schema. Thanks

Why are both of the answers bringing up JSON, when your question never mentioned it? I feel like I'm missing something. — Raleigh L.
– Raleigh L., Commented May 7, 2023 at 2:29
Stumbled upon this post also while looking around for information on XML / XSD processing in Python. Don't understand why the answers are referring to JSON when the question doesn't mention anything about it. — Karri
– Karri, Commented May 29, 2024 at 6:11

stever1k · Accepted Answer · 2020-05-09 11:14:08Z

2

here is a minimal working example with json data

import xmlschema
import json
from xml.etree.ElementTree import ElementTree

my_xsd = '<?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"> <xs:element name="note" type="xs:string"/> </xs:schema>'

schema = xmlschema.XMLSchema(my_xsd)
data = json.dumps({'note': 'this is a Note text'})

xml = xmlschema.from_json(data, schema=schema, preserve_root=True)

ElementTree(xml).write('my_xml.xml')

for more complex xsd's I prefer working with generateDS, which creates very very solid classes from even for very large xsd files.

answered May 9, 2020 at 11:14

stever1k

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Comments

serrajo · Accepted Answer · 2019-10-18 14:38:29Z

1

In the end I did the following and seems to do the job:

import xmlschema
from xml.etree.ElementTree import ElementTree
# create XML from json, starting from known schema file 
sch      = 'schema_file.xsd'
schema   = xmlschema.XMLSchema(sch) 
jsondata = json of the data to be converted to XML
xml      = xmlschema.from_json(jsondata,schema=schema)
# write to XML
ElementTree(xml).write('myxml.xml')

answered Oct 18, 2019 at 14:38

serrajo

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2 Comments

kidman01 Over a year ago

How do you know what the JSON data has to look like? That's where I'm currently tripping.

Ender Over a year ago

The xmlschema documentation on decoding the schema to JSON should give you an idea of how the JSON would look like.

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