opencv
Getting OpenCV 3 up and running with Python 3.5+ on Ubuntu 14.04 is a pain in the ass. For the most part the instructions here are the same as in this guide, with a few changes needed specifically for Python 3.5+. I’m going to assume that you already have pyenv and pyenv-virtualenv installed for the purpose of this guide.
Install prerequisites sudo apt-get update sudo apt-get install -y build-essential cmake git pkg-config sudo apt-get install -y libjpeg8-dev libtiff4-dev libjasper-dev sudo apt-get install -y libpng12-dev libavcodec-dev sudo apt-get install -y libavformat-dev libswscale-dev libv4l-dev sudo apt-get install -y libgtk2.