I work with 2 such people (academics, prefer mercurial, use R rather than Python so I can't imagine would have had any reason to install Python 3). Lots of peop

I work with 2 such people (academics, prefer mercurial, use R rather than Python so I can't imagine would have had any reason to install Python 3). Lots of people use version control without being "developers", so not needing a more up to date Python (or, at just happy with Python 2).