Earlier quoted context omitted.
Be aware that PyPI isn't a great way to get accurate statistics. You can't just ignore a bunch of statistics because they aren't convenient to you; that's not how maths works. Statistical sampling is based on the premise that your sample is randomized from the total population; I would argue that the stats from pypi represent a reasonable random sample of python users around the world. Certainly, you can argue otherw…
GP has argued otherwise. PyPI sampling is not random. It is heavily influenced by automatic downloads and such and completely ignores that most simple 2.x libs / non-3.3-tagged libs will work just fine on python 3. In other words, it is neither random nor representative of python 3 usage, failing the premise you yourself mentioned. There's no easy way to determine Python 3 usage overall. Your best bet is to go around…
It does matter because that means if you ever want to do it as a job, you HAVE to learn Python2 for that gig at CloudShareBuzzr. Paying your bills is always going to top using "the latest version" of anything. I'm not sure why people ignore or miss that point.
Python3 is the optional language, 2 is mandatory if you want to get paid.