I want to say that I don't know Python (a programming language), whose precise meaning is that I have zero knowledge on Python. I want to say it in a concise way, i.e., using it as a construction part in a longer sentence, e.g., something along the form of I am Python-agnostic or I am Python-blind, is there something like these?
UPDATE: My choice is "python illiterate". To use it in a sentence --
He has turned himself from Python illiterate to Python expert.
Any other answers just can't beat this.