Python 3

Why Python3

Python seems to be robust and efficient, but i'm not DEV at all to give correct opinion
I made only one DEV project in C++ 10 years ago and i was confortable with Python and way of using it

Which version ?

I'm using 3.8 version

Python compatibility

It should work with lower and higher versions as I don't use any difficult or complex Python objects or syntax

Which Python installer

Some debates are ongoing to be sure of which version we can use.
RPM version is good for sure but costly in dependencies. 
xlC version is released once each major version, but working with only OpenSSL dependency.
I let you take the correct choice. 
IBM link for Python3 RPM: https://www.ibm.com/support/pages/aix-toolbox-linux-applications-downloads-alpha
Link to xlC version (got from Python.org website): http://www.aixtools.net/index.php/python3