问题
When trying to "import cv" in python I get: "ImportError: No module named cv". This question has appeared in many forms, but I haven't found the answer that helps.
On my Mac OS X Lion, among many other ports, I have run:
sudo port install python27
and
sudo port install opencv +python27
Running:
port select python
I see: "python27 (active)"
And running:
port installed opencv
I see: "opencv @2.3.1a_1+python27 (active)"
What else should I check? Thanks.
回答1:
I had this same problem. It looks like a (maybe?) bug with the OpenCV install script for 2.3.1a. It will not create the Python bindings unless NumPy is already installed.
To fix it:
sudo port uninstall opencv
sudo port install py27-numpy
sudo port install opencv +python27
That worked for me! I found this by doing some Googling, and the correct answer was here: wbarczynski.org/wp/2011/11/25/opencv-with-py-bindings-on-mac-with-macports-intall-numpy-first/
回答2:
STEP ONE
Use Macports to install opencv.
STEP TWO
Put these two files somewhere on your PYTHONPATH (for example in your site-packages):
- https://github.com/jonmrodriguez/opencv-2.3-new-python-bindings/blob/master/cv.py
- https://github.com/jonmrodriguez/opencv-2.3-new-python-bindings/blob/master/cv2.so
STEP THREE
Create the below soft links (because cv2.so expects the dylibs to be in /usr/local but MacPorts installs to /opt/local):
cd /usr/local/lib/
ln -s /opt/local/lib/libopencv_core.2.3.dylib libopencv_core.2.3.dylib
ln -s /opt/local/lib/libopencv_flann.2.3.dylib libopencv_flann.2.3.dylib
ln -s /opt/local/lib/libopencv_imgproc.2.3.dylib libopencv_imgproc.2.3.dylib
ln -s /opt/local/lib/libopencv_video.2.3.dylib libopencv_video.2.3.dylib
ln -s /opt/local/lib/libopencv_ml.2.3.dylib libopencv_ml.2.3.dylib
ln -s /opt/local/lib/libopencv_features2d.2.3.dylib libopencv_features2d.2.3.dylib
ln -s /opt/local/lib/libopencv_highgui.2.3.dylib libopencv_highgui.2.3.dylib
ln -s /opt/local/lib/libopencv_calib3d.2.3.dylib libopencv_calib3d.2.3.dylib
ln -s /opt/local/lib/libopencv_objdetect.2.3.dylib libopencv_objdetect.2.3.dylib
ln -s /opt/local/lib/libopencv_legacy.2.3.dylib libopencv_legacy.2.3.dylib
ln -s /opt/local/lib/libopencv_contrib.2.3.dylib libopencv_contrib.2.3.dylib
回答3:
I was wondering if you have installed opencv to the OSX version of the python instead of macports.
have you tried easy install, I normally use easy_install to install the packages.
/opt/local/bin/easy_install-2.7 opencv
来源：https://stackoverflow.com/questions/8410443/how-to-install-python-2-7-bindings-for-opencv-using-macports