IronPython - The Python programming language running on .NET

http://www.codeplex.com/IronPython

IronPython is a new implementation of the Python programming language running on .NET. It supports an interactive console with fully dynamic compilation. It is well integrated with the rest of the .NET Framework and makes all .NET libraries easily available to Python programmers, while maintaining full compatibility with the Python language.

see more Differences between IronPython 1.0 and CPython 2.4.3