I can't speak to Ruby, but Microsoft has an active Python group.[1] Granted, it seems to focus on Visual Studio (which I'm told has excellent Python tooling) and Azure.
Neat, but that doesn't seem to be integrated into .NET like IronPython was (well, is, just not maintained it seems). Which is what the post I was responding to was talking about.
[1]: https://blogs.msdn.microsoft.com/pythonengineering/