install python2.4 on FreeBSD and keep using python2.3

[Ksenia Marasanova]

Hi,

I have python2.3, installed from port /lang/python long time ago. The
current version is 2.4, but I'd rather have two python versions,
instead of upgrading.
Is there maybe a way to somehow link installed python to
/lang/python2.3 port, and then upgrade ports and install /lang/python
as a new (2.4) version, without upgrading?
Or am I missing something and the things are much easier? I am not a
FreeBSD guru and it's my first python upgrade... thanks!

--
Ksenia