No, IMO. Don't get me wrong, Python 3 is a better language than Python 2. I just don't think it's that much better that it was worth breaking backwards compatibility and stalling the language for several years.

Python 3 did enough to break everyone's existing code, but nowhere near enough to make that worthwhile.

It's common for other language communities to consider the Python 2/3 transition as an example of "what not to do".