xml_dataclasses is basically unmaintained

[tobywf]

Sorry, I no longer have the time to keep up with Python, and so lack the expertise to maintain this package.

If you would like to take over the project, feel free to cut a PR with a new feature. I'm willing to discuss transferring ownership to a new maintainer with the time and skills.

[webysther]

Who is reading this issue, this project can be replaced using:

https://github.com/martinblech/xmltodict
https://github.com/konradhalas/dacite

xmltodict support any type of xml and is pythonic and dacite can convert the dict to dataclass which can be used to build the xml in any direction.