I'm on OS X El Capitan running QGIS version 2.18.2 which I installed via the Kyngchaos installers.
I'm trying to install a plugin, which requires, among other things, that Pysal needs to be installed. However, despite installing it via pip it's still not working.
It appears that QGIS uses a different interpreter, which I get, but I can't find it or figure out how to install anything to it.
Best Answer
The link to a previous question @underdark posted in her comment pointed me in the right direction.
The only thing not detailed there is the syntax needed to pick between two different python 2 interpreters (system default which QGIS uses + one installed by homebrew which is my default).
For that case, I had to enter the path to the relevant interpreter, the '-m' flag, then my pip command. In my case, the bash command was "/usr/bin/python -m pip install [module name]"