Python or XSD for validating XML documents

Question

Getting XML documents from external sources, not all of them following a schema makes it hard to have all identical structured XML files.

1st option: Use an XML Scheme language or XSD

2nd option: Use Python(ElementTree, Panda) to create a XML validation checker

Which option would be better considering the number of files is quite a lot and I don't want to change the rules every time I get XMLS from a new external source?

The goal would be to have a self-sustainable XML validation/checker

Answer 1

I would go with lxml and XSD validation . XSD is the way to go by design and does not creates a dependency in any language (python,java,etc..)

Answer 2

XML Schema was invented specifically to solve this type of problem, and it does it very well. I cannot think of any good reason to write your own validator. You may like ElementTree a lot and be very productive with it, but it's never going to do the job as easily and thoroughly as an XSD.