通过 homebrew 安装在 Mac OS X 上安装为 Python3.5 安装 Opencv3：
$ brew install opencv3 --with-python3 ...... ...... This formula is keg-only, which means it was not symlinked into /usr/local. opencv3 and opencv install many of the same files. Generally there are no consequences of this for you. If you build your own software and it requires this formula, you'll need to add to your build variables: LDFLAGS: -L/usr/local/opt/opencv3/lib CPPFLAGS: -I/usr/local/opt/opencv3/include ==> Summary
echo /usr/local/opt/opencv3/lib/python3.5/site-packages >> /usr/local/lib/python3.5/site-packages/opencv3.pth
$ python >>> import cv2 >>> cv2.__version__ '3.1.0'