Step1: Find the path where your cv2.so is installed (if you use the python-cv wheel to install the opencv)

Step2: Export the path to your .bashrc or .zshrc file, just like this:

예시

export PYTHONPATH=”/home/userx/anaconda3/lib/python3.5/site-package‌​s:$PYTHONPATH”

해결 됩니다.