This snippet of code was posted in 2014 and slightly revised in 2016 and 2017. It was more of a quick'n'dirty script than a polished tool. It is made only for Linux and in Python 2, which has since become outdated.
I currently do not use it, and I suggest you avoid it as well. Please do not expect support for using this script.
🔥 If you need an alternative, @glaucocustodio has kindly suggested EasyVPN in this comment.
The rest of the README is left for historical purposed.