Mac Installation Guide:

• Open Terminal

• Install Homebrew

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

• Install OpenCV

brew tap homebrew/science

brew install opencv

• Run python and test if it works!

python

>>> import cv2

Debugging:

• 'numpy.core.multiarray failed to import'

  • In terminal type:

  python
  
  >>> import numpy
  >>> numpy.__path__ # if this prints out something along the lines of 
                     # '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras'
  

  Then put this at the top of their file:

import sys

for p in sys.path:
    if p.startswith('/System/Library/Frameworks/Python.framework/Versions/2.7/Extras'):
        sys.path.remove(p)

• "No module named 'cv2'"
  • In terminal type:

cd ~
open .bash_profile

# at the bottom
PATH="/usr/local/lib/python2.7/site-packages:${PATH}"
export PATH

Save that file using cmd + S. Then run:

source ~/.bash_profile

Then try running python and importing cv2 again!