Porting Python (at least the core interpreter) should be a matter of
having a decent C compiler. It is very portable code, for the most
part (having been developed in part on a Mac with 16-bit ints), except
the inherently OS-dependent parts like posixmodule.c (which is
optional anyway).
Porting STDWIN would require serious knowledge of the Amiga window
system, you would have to write most code from scratch. I haven't
heard of anyone attempting this yet.
Cheers,
--Guido van Rossum, CWI, Amsterdam <Guido.van.Rossum@cwi.nl>