The strengths of Python are the simple language syntax and easy integration of libraries. Since most of those libraries are also available in R, there was no real demand for a Python bridge so far. When this changes, we'll provide a bridge.
Using "rPython" could theoretically also work, but two bridges connected together would be an awkward construction.
I agree with you, R is great!
But suppose I have my own C++ program that does some machine learning stuff. How may I use it with Zorro?
Is there any possibility with scripting?