前提你已经在Mac上安装了Python3

1，安装opencv

brew up

brew install opencv

2，

homebrew安装的程序位置都在 下面。

/usr/local/Cellar/

所以我们需要找到的就是opencv的cv2*.so文件，我的文件路径为：

/usr/local/Cellar/opencv/3.3.1_1/lib/python3.6/site-packages/cv2.cpython-36m-darwin.so

3，opencv和python3环境关联

终端进入目录：/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages

执行：

ln -s /usr/local/Cellar/opencv/3.3.1_1/lib/python3.6/site-packages/cv2.cpython-36m-darwin.so cv2.so

4，测试是否成功

1. >>> import cv2
2. >>> cv2.__version__

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