I disagree. Looking through many of the questions tagged as python-3.1, python-3.2, python3.2, and python3.3, there aren't very many at all which are version specific.
Python 3.1
From python-3.1 currently has 18 questions. The following do not appear to be directly related to version 3.1:
Several have 3.1 proudly displayed in their text, but the issues discussed are not version specific. These next few may be specific to version 3.1, but should they be python-3.1.2 or python-3.1.3?
And while I'm currently out of flags, these don't appear to fit the Q&A format:
Python 3.2
Without question, I think python3.2 (with 8 questions) -> python-3.2 (with 23 questions). These are quite similar to the 3.1 questions where only a few appear to really be version specific. In fact, I think only these three:
are version specific. Perhaps this one too:
but I would've preferred to see that on Ask Ubuntu.
Python 3.3
Summary
If there are version specific issues to the bugs, errors, features, in Python 3.1, 3.2, or 3.3, then sure let's keep the tag(s). However, given that there are only about a dozen questions, is it really necessary to include the major version as well as the minor version? Personally, I think the correct premise is to use the python-3.x.
As a pragmatist, I'm seeing a ton of things misclassified and little added by including the major and minor release versions. For those interested in the most recent version, or the outstanding issues, I think this information could just as easily be obtained by searching for Python 3.3
or looking at unanswered python-3.x bugs, errors, etc without necessitating python-3.3.
Disclaimer
I'm not a huge Python programmer. I haven't done anything in Python 3 -- so I may very well be misclassifying the questions above. I didn't approve or suggest these synonym -- I'm not trying to get a badge or something, just tossing in my $0.02.