CD Projekt's GoG client has a feature where users can write Python extensions [0] for third party account integrations. To enable this, they ship an entire Python interpreter alongside the app binary [1]. I guess this kind of makes sense, it is way easier than having users manage their own `venv`s and other Python environment stuff. Packaging Python apps for distribution outside of a Python development context is quite pesky.
[0]: https://github.com/gogcom/galaxy-integrations-python-api
[1]: https://support.gog.com/hc/en-us/articles/360024812473-GOG-G...