Installing matlab-engine on python 3.6

matlab_engine_python_3_6.org

How to install Matlab Engine on Python 3.6

Preparation

If you’ve tried recently to install matlab engine on a Python 3.6, you’ve seen a message saying that the platform is not supported. That doesn’t make any sense, since Python 3.5 is supported, right?

The problem is that Mathworks hardcodes a list with valid versions, I guess to reduce pressure on their customer service in case something goes wrong with untested versions. Well, that doesn’t mean that we shouldn’t be allowed to try it anyway, right?

All we have to do is modify the offending harcoded files (if we have write permission. On a server we’d have to copy files and change some hardcoded paths as well.)

Assuming we have write permission to change matlab’s install scripts, these are the changes to support 3.6:

Update __init__ files with hardcoded checks.

In the file engines/python/build/lib/matlab/engine/__init__.py , change the list _supported_versions by appending the string ~’3_6’~

_supported_versions = ['2_7', '3_3', '3_4', '3_6']

Do the same for file engines/python/dist/matlab/engine/__init__.py and for engines/python/setup.py

Make a copy of the compiled library

There is a compiled library for your architecture and for your python version. On a Mac, for example, that binary is called /engines/python/dist/matlab/engine/maci64/matlabengineforpython3_4.so.

Make a copy and rename it to your python version:

engdir=engines/python/dist/matlab/engine/maci64
cp ${engdir}/matlabengineforpython3_4.so ${engdir}//matlabengineforpython3_6.so

Open the binary in any binary editor and change all references from 3.4 to 3.6 and all references from 3_4 to 3_6. If everything goes well, running the following command on the extern/engines/python directory should return only 3 entries:

find /Applications/MATLAB_R2015b.app/extern/engines/python -type f -exec grep -l "3_4" {} \;

Installation

To install, simply follow the instructions in the Matlab website:

python3 setup.py install

Test installation

Fire up your python3.6 and try the following:

import sys
print(sys.version)

import matlab.engine
eng = matlab.engine.start_matlab()
print(eng.sqrt(4.))

Can you give us the 3.6 binary file, i can't seem to make it work

Ops， for me it shows “Module use of python35.dll conflicts with this version of Python.”
Seems this approach dosen't work for me
UPDATE:
I forgot to change one python35.dll to python36.dll. And after I changed it, it works well.

Thanks so much

I'm getting an error with it not being able to find libmx.so

I get segfault after that steps on linux with Py3.6.4 and MATLAB2017a

thank you for the post, but how do you run an existing matlab file from Python ?

thank you for the post, but how do you run an existing matlab file from Python ?

https://www.mathworks.com/help/matlab/matlab_external/call-user-script-and-function-from-python.html

Thank you very much! Where should be the m file? Or how do you give python the adress of the file? Also, when running from python, is it possible to control the working directory of matlab as well? Il ven 22 nov 2019, 20:03 Daniel Gomez <notifications@github.com> ha scritto:

…

thank you for the post, but how do you run an existing matlab file from Python ? https://www.mathworks.com/help/matlab/matlab_external/call-user-script-and-function-from-python.html — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://gist.github.com/303879ca649f7a3fe113912d7ffa62d4?email_source=notifications&email_token=AEMP7JOT7GQE4SZC4XEOB43QVAUG5A5CNFSM4JQQVUP2YY3PNVWWK3TUL52HS4DFVNDWS43UINXW23LFNZ2KUY3PNVWWK3TUL5UWJTQAF4UQU#gistcomment-3090698>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEMP7JIK2UBIBICJCP7JSD3QVAUG5ANCNFSM4JQQVUPQ> .

Thanks so much! It helps me to solve my problem perfectly!