Pyston versions aren't aligned to Python versions, if that's what you're thinking. This supports 3.x syntax (not sure which exactly, at least 3.8).
Re:Pyston v2.3.3: ARM Support
by malloc-free on Tuesday April 19, 2022 @09:12AM
(#31082613)
It's based on CPython 3.8.12
I guess I could implement some old 8 year old project from GitHub on my raspberry pi.
I I don’t think conda has support for python version 2.3. Unnmmm. I guess I could waste time today.
Yet again,this is a waste of time...