I've a friend of mine that is a life that works with Python (expecially under Linux platforms)... he has always said to me that Python is the best language he has never used, expecially for its structure (I don't know if it's really true! 
). Now I'm happy to say him that also for the .NET platform is available a good Python language: IronPython! 
I think it's the time that he start thinking to develop also under Windows!