It is obvious, that we will have to let Python 2.x to go one day. Now the developers have been working on Pywikipedia 2 for a long time, and are looking forward to release it. But what then? How long will itt work?

In the past weeks I was dealing with Python very much, and I have ideas on 2 vs. 3. I tried to guess the reason not to use Python 3. As far as I see, the main problem is with the big quantity of u"..."s. But I they can probably be converted py the 2to3 module. So what is the main reason to keep 2.x?