What is xgbxml?
xgbxml is an extension for the well-known python package lxml: https://lxml.de/.
lxml is a Python processor for XML files and comes with Anaconda distribution as standard.
xgbxml extends lxml for working with gbXML files. gbXML (Green Building XML: https://www.gbxml.org/) is an XML format for sharing information about buildings, often for the purposes of energy simulation.
It would be entirely possible to work with gbXML files using lxml alone. However xgbxml provides additional methods and features that make working with gbXML much quicker and easier.
The source code for xgbxml is on GitHub here: https://github.com/stevenkfirth/xgbxml