Step 1. install anaconda
Go https://www.anaconda.com/distribution/ to download anaconda and install it.

Step 2. Use conda to install pywifi for mac
macos_dev branch is a pywifi project for Mac with python 3.5 pyobjc is dependent module for mac pywifi module

$ conda create -n wifi-brute-force python=3.5
$ conda activate wifi-brute-force
$ git clone -b macos_dev https://github.com/awkman/pywifi.git
$ cd pywifi
$ pip install pyobjc
$ pip install .

Now pywifi module for Mac is ready in conda environment, named wifi-brute-force
You can enjoy WIFI-Brute-Force.