How to force Sphinx to use Python 3.x interpreter

Question

I try to create documentation for a project written with Python 3.x. Sphinx is the tool I want to use and, according to the official site, its last version 1.1.2 is

Answer 1

On Ubuntu, python3-sphinx is a separate package. In my case, I needed to install python3-sphinx:

sudo apt-get install python3-sphinx

You can probably run both on a machine, but I just removed the old one:

sudo apt-get remove python-sphinx

My old makefile worked just fine with my Python 3 code after this.