Python-Future VS six

Python 2.7 has been EOL for over a year. You should avoid needing to use it. If you do please use something like python-future that should help you write code that is backwards / forwards compatible.

Since you think you may be updating this code, I would strongly suggest you check out the six or future packages which help to write code that runs under both python 2 and 3. IME future does a better job of making python2 code look like python3, making the eventual cutover easier, while six makes compromises on both ends and code doesn’t looks strictly like 2 or 3. They both have really good guides for transitioning code as well, even if you don’t import them. Future’s guide was constantly open when I did this work, more so than even the core documentation.

Looking at the insights of Six’s GitHub page, we see only 1 person with a significant influence.

Easier example...sphinx is a document generator for python programs (creating docs for the API of programs from source-code comments for example). Spinx depends on html5lib which itself again depends on six...want to make a guess what six uses to generate its API docs? ;) So if you want the api docs of six you will have to first install it without to be able to get a working sphinx install then redo the six on including the building of the API docs.