Problems installing “MATLAB Engine for Python” with Anaconda

问题:

I am using Python 3.4.3 | Anaconda 2.3.0 (x86_64) on OS X 10.10.5 and following these instructions to install MATLAB Engine for Python. Installation seems to succeed, but upon launching python & attempting to import, I see the following:

Python 3.4.3 |Anaconda 2.3.0 (x86_64)| (default, Oct 20 2015, 14:27:51)  [GCC 4.2.1 (Apple Inc. build 5577)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import matlab.engine Traceback (most recent call last):   File "/Users/tyler/.local/lib/python3.4/site-packages/matlab/engine/__init__.py", line 42, in      pythonengine = importlib.import_module("matlabengineforpython"+_PYTHONVERSION)   File "/Users/tyler/anaconda/lib/python3.4/importlib/__init__.py", line 109, in import_module     return _bootstrap._gcd_import(name[level:], package, level)   File "", line 2254, in _gcd_import   File "", line 2237, in _find_and_load   File "", line 2224, in _find_and_load_unlocked ImportError: No module named 'matlabengineforpython3_4'  During handling of the above exception, another exception occurred:  Traceback (most recent call last):   File "/Users/tyler/.local/lib/python3.4/site-packages/matlab/engine/__init__.py", line 58, in      pythonengine = importlib.import_module("matlabengineforpython"+_PYTHONVERSION)   File "/Users/tyler/anaconda/lib/python3.4/importlib/__init__.py", line 109, in import_module     return _bootstrap._gcd_import(name[level:], package, level)   File "", line 2254, in _gcd_import   File "", line 2237, in _find_and_load   File "", line 2226, in _find_and_load_unlocked   File "", line 1191, in _load_unlocked   File "", line 1161, in _load_backward_compatible   File "", line 539, in _check_name_wrapper   File "", line 1715, in load_module   File "", line 321, in _call_with_frames_removed ImportError: dlopen(/Applications/MATLAB_R2015b.app/extern/engines/python/dist/matlab/engine/maci64/matlabengineforpython3_4.so, 2):     Library not loaded: @rpath/libpython3.4m.dylib       Referenced from: /Applications/MATLAB_R2015b    .app/extern/engines/python/dist/matlab/engine/maci64/matlabengineforpython3_4.so       Reason: image not found      During handling of the above exception, another exception occurred:  Traceback (most recent call last):   File "", line 1, in    File "/Users/tyler/.local/lib/python3.4/site-packages/matlab/engine/__init__.py", line 60, in      raise EnvironmentError('The installation of MATLAB Engine for Python is ' OSError: The installation of MATLAB Engine for Python is corrupted.  Please reinstall it or contact MathWorks Technical Support for assistance. 

While researching this issue, I found several other references to this exact issue on MathWorks' website, all without a resolution. The final link suggests the problem may be with dynamic linking.

Given how many scientific toolboxes are only available in MATLAB, it would be of great use to be able to call this engine using Anaconda. While there are other packages available that support this functionality, they invariably have limitations or other complexity like a client-server architecture.

Any suggestions are most welcome.

回答1:

According to my communication with MathWorks support, MATLAB Engine for Python is incompatible with Anaconda. Fortunately, this is incorrect.

Thanks to some direction from the Anaconda mailing list, I found a simple solution:

sudo ln -s ~/anaconda/lib/libpython3.4m.dylib /usr/lib 

After this, matlab.engine imports successfully. Hope this helps someone!

Edit: As of OS X 10.11 El Capitan, the workaround needs to be tweaked due to the Rootless feature, as root no longer has permission to modify /usr/lib

sudo ln -s ~/anaconda/lib/libpython3.4m.dylib /usr/local/lib 

文章来源: Problems installing “MATLAB Engine for Python” with Anaconda