You're absolutely right — IronPython does run Python on .NET.

W++ takes a different approach: it's a custom scripting language that looks like Python but is designed for tight integration with .NET itself, including:

Native JIT compilation (via IL emission)

NuGet package import support (via .ingot wrapping)

Familiar syntax (like print, let, for, if) with static structure

IronPython is about bringing Python to .NET. W++ is about making .NET scripting feel more like Python.

Think of it as IronPython’s minimalist, compile-time-powered cousin.