A year before i wrote a simple python module to covert json data to xml. It is fairly straight forward and efficient to use.
It is available at Pypi and you can install it easily using : `pip install json2xml`
Also, here is the link of the project on Github: https://github.com/vinitcool76/json2xml . The project also has an example file in it. Just run it and you will understand its working.