关于这个有很多教程和问题。

This似乎回答了你的问题。编辑：复制如下：1) Download OpenCV from http://opencv.org/downloads.html and extract

2)From the extracted folder, copy the file from the extracted directory:

opencv/build/python/2.7/(either x86 or x64, depending on your Anaconda

version)/cv2.pyd to your Anaconda site-packages directory, e.g.,

C:\Anaconda\Lib\site-packages

3)To get ffmpeg within opencv to work, you'll have to add the directory

that ffmpeg is located in to the path (e.g., opencv/sources/3rdparty

/ffmpeg). Then you'll have to find the dll in that folder (e.g.,

opencv_ffmpeg_64.dll) and copy or rename it to a filename that includes

the opencv version you are installing, (e.g., opencv_ffmpeg249_64) for

2.4.9.

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EDIT2：OpenCV不支持Python 3.x，除了opencv3.0版(仍处于测试阶段)。从下载站点下载3.0版本并尝试(感谢this question)。

祝你好运！