install pyopencv with pip on Mac OS X

问题:

I am trying to install pyopencv with pip in OS X Mountain Lion and it fails by import setuptools. Following is my work. what is "Library" in setuptools? I have not seen that before. I already installed opencv via homebrew and other things. In doucmentation of pyopencv, it doesn't explain installation with pip only source install,

(img2)appleparan@LiamMac src $ brew install cmake Warning: cmake-2.8.11.2 already installed (img2)appleparan@LiamMac src $ brew install cmake --upgrade Warning: cmake-2.8.11.2 already installed (img2)appleparan@LiamMac src $ brew install opencv Warning: opencv-2.4.6.1 already installed (img2)appleparan@LiamMac src $ brew install boost Warning: boost-1.54.0 already installed (img2)appleparan@LiamMac src $ pip install pyopencv Downloading/unpacking pyopencv   Could not find a version that satisfies the requirement pyopencv (from versions: 2.0.wr1.0.1-demo, 2.0.wr1.0.1, 2.0.wr1.1.0, 2.1.0.wr1.0.0, 2.1.0.wr1.0.1, 2.1.0.wr1.0.2, 2.1.0.wr1.1.0, 2.1.0.wr1.2.0, 2.1.0.wr1.2.0-demo, 2.1.0.wr1.2.0) Cleaning up... No distributions matching the version for pyopencv Storing complete log in /Users/appleparan/.pip/pip.log (img2)appleparan@LiamMac src $ pip install pyopencv==2.1.0.wr1.2.0 Downloading/unpacking pyopencv==2.1.0.wr1.2.0   Downloading pyopencv-2.1.0.wr1.2.0.tar.gz (363kB): 363kB downloaded   Running setup.py egg_info for package pyopencv     Traceback (most recent call last):       File "<string>", line 16, in <module>       File "/Users/appleparan/.virtualenvs/img2/build/pyopencv/setup.py", line 92, in <module>         from setuptools import setup, find_packages, Extension, Library     ImportError: cannot import name Library     Complete output from command python setup.py egg_info:     Traceback (most recent call last):    File "<string>", line 16, in <module>    File "/Users/appleparan/.virtualenvs/img2/build/pyopencv/setup.py", line 92, in <module>      from setuptools import setup, find_packages, Extension, Library  ImportError: cannot import name Library  ---------------------------------------- Cleaning up... Command python setup.py egg_info failed with error code 1 in /Users/appleparan/.virtualenvs/img2/build/pyopencv Storing complete log in /Users/appleparan/.pip/pip.log (img2)appleparan@LiamMac src $ python --version Python 2.7.5 (img2)appleparan@LiamMac src $ pip freeze Pillow==2.1.0 distribute==0.7.3 matplotlib==1.3.0 nose==1.3.0 numpy==1.7.1 pyparsing==2.0.1 python-dateutil==2.1 scipy==0.12.0 six==1.4.1 stevedore==0.12 tornado==3.1.1 virtualenv==1.10.1 virtualenv-clone==0.2.4 virtualenvwrapper==4.1.1 wsgiref==0.1.2 (img2)appleparan@LiamMac src $ 

EDIT: I found setuptools source has Library and Extension (https://bitbucket.org/pypa/setuptools/src/27df3c725f9696ba730456f3f444cc2fb5271d4b/setuptools/extension.py?at=default) But I don't know why it doesn't recognize.

My setuptools' verison is 1.1.6

(img2)appleparan@LiamMac src $ pip install setuptools --upgrade Requirement already up-to-date: setuptools in /Users/appleparan/.virtualenvs/img2/lib/python2.7/site-packages/setuptools-1.1.6-py2.7.egg Cleaning up... (img2)appleparan@LiamMac src $ 

回答1:

In recent version of setuptools, Library is inside of extension.py. pyopencv should import Library as setuptools.extension.Library not setuptools.Library.

回答2:

change

from setuptools import setup, find_packages, Extension, Library 

to

from setuptools import * from setuptools.extension import * 

回答3:

You can print python to run python interpreter and then print following inside python:

import sys
sys.path

Look for line similar to /Library/Python/2.7/site-packages in output. Print exit() to exit python interpreter.

In command line issue command: cd /Library/Python/2.7/site-packages and list files with ls command. Look for files 'cv.py' and 'cv2.so'. They should be there. Then refer to ~/.bash_profile file issuing command cat ~/.bash_profile to find your PYTHONPATH: there should be line similar to export PYTHONPATH=/usr/local/lib/python2.7/site-packages. Issue command cd /usr/local/lib/python2.7/site-packages to jump into that folder.

Now you could create symlinks for cv2.so and cv.py issuing commands: sudo ln -s /usr/local/lib/python2.7/site-packages/cv.py /Library/Python/2.7/site-packages/cv.py and sudo ln -s /usr/local/lib/python2.7/site-packages/cv2.so /Library/Python/2.7/site-packages/cv2.so.

文章来源: install pyopencv with pip on Mac OS X