Is it preferable to use __future__ or future to write code compatible with python2 and python3?

Question

Or are there specific situations where one is better than the other?

So far, all I gathered is that future is only available for >=2.6 or >=3.3.

The current code

Answer 1

Unless you have a very specific reason to support Python 2.x, then Python 3.x is the future. It's been over 10 years since it was released.

Python 2.7, the last of the 2.x series, is end of life'd in 2020. https://www.python.org/dev/peps/pep-0373/

TLDR: It's time to use Python 3