Current 2.X nameko version supports python 2.7, 3.4+.
What are plans for python version supported in future version 3.x?
Python 2.7 is to reach end of life very soon. Python 3.4 reached it’s end of life. I personally switched to Python 3.6, where I find f-strings and where I enjoy type annotations.
Narrowing python version supported would simplify development but I can understand, installed base can be strong reason to stay with older versions for a while.