How to use R models in Python
There are several options:
(1) Random Forest is a well researched algorithm and is available in Python through sci-kit learn. Consider implementing it natively in Python if that is the end goal.
(2) If that is not an option, you can call R from within Python using the Rpy2 library. There is plenty of online help available for this library, so just do a google search for it.
Hope this helps.
I have been working on an algorithm trading project where I used R to fit a random forest using historical data while the real-time trading system is in Python. 
I have fitted a model I'd like to use in R and am now wondering how can I use this model for prediction purposes in the Python system.
Thanks.