[asdff]

A lot of this can be automatic, like flagging all python 2 syntax on the website as python 2. There can be confusion visiting a thread, looking at the year, and trying to figure out which version of python might have been used if you aren't very familiar with python 2 vs. 3, which would be most people coming to stack overflow I expect.

[thewebcount]

Oh man, I would love this. It's the same for Swift (maybe even worse, given the proliferation of versions over just a few years). But those sorts of things aren't generally automated on SO. They're done manually by volunteers. I did some for a while, and it's quite tiresome.