Yes, this code was not possible to build until the API changes in 2022 which I previously highlighted, though if you’d like you can confirm with the code author directly on the GitHub (submit an issue or reach out to them via their GitHub profile).
This solution also requires Forge to parse and store GUIDs for models, so a pure Python solution won’t fit here - you’ll need C# and web API skills to build that specific solution, and likely any full scale solution would need such tools or a lot more - round about effort to get the necessary information, such as journal parsing, collaboration cache review. Those may or may not provide the needed info (the GUIDs but may not align), but I believe it would take significantly longer as you’d have to upload all models to BIM360, then open all models locally with the local links, then close Revit, then parse the data, then repath the links (downloading each model again in the process of the repathing…). A full Forge app (via the methods shown and design collaboration) which just does all of the work is likely the best bet speed wise though.