OSError: MATLAB Engine for Python 3.8 on MacBook Pro with M1 chip

Question

Mehul Garg 2021-1-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/726093-oserror-matlab-engine-for-python-3-8-on-macbook-pro-with-m1-chip

回答： alaa Ahmed 2022-5-31

After running the setup.py file I am trying to import the MATLAB engine from python and i get an OSError:

Please reinstall MATLAB Engine for Python or contact MathWorks Technical Support for assistance: dlopen(/Applications/MATLAB_R2020b.app/extern/engines/python/dist/matlab/engine/maci64/matlabengineforpython3_8.so, 2): no suitable image found.  Did find:
	/Applications/MATLAB_R2020b.app/extern/engines/python/dist/matlab/engine/maci64/matlabengineforpython3_8.so: mach-o, but wrong architecture
	/Applications/MATLAB_R2020b.app/extern/engines/python/dist/matlab/engine/maci64/matlabengineforpython3_8.so: mach-o, but wrong architecture

I have run the usual command:

import matlab.engine

I have MATLAB 2020b latest version running smoothly via rosetta on the said machine. Aren't the MATLAB python engine libraries updated to handle the same.

Kindly help me circumvent this problem.

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Peter Somhorst 2021-10-21

编辑：Peter Somhorst 2021-10-21

Hi Mehul,

How did you install Python? I found it doesn't work if you install it through pyenv. What worked for me (installing it, haven't tested anything yet):

install python 3.8 through homebrew (`arch -x86_64 /usr/local/bin/brew install python@3.8`)
install the matlab engine in this version of python (`/usr/local/opt/python@3.8/bin/python3.8 setup.py install`)

NB: Matlab 2021B supports Python 3.9 as well.

Hope this helps!

xenon zhang 2021-11-1

在 MATLAB Online 中打开

hello, you can use

arch -x86_64 python3

instand of

python3

in terminal to run python as a x86 program (without install another version), then matlab engine can working well

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Answer 1

alaa Ahmed 2022-5-31

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https://ww2.mathworks.cn/matlabcentral/answers/726093-oserror-matlab-engine-for-python-3-8-on-macbook-pro-with-m1-chip#answer_975055

在 MATLAB Online 中打开

If you are running matlab in Macbook pro with MATLAB 2020b .. Please run this command on matlab command window so that you set the python evironment directory

pyversion /usr/local/bin/python3

Then type pyenv, you will be able to find all PythonEnvironment feilds are filled :D

pyenv
ans = 
PythonEnvironment with properties:
Version: "3.8"
Executable: "/usr/local/bin/python3"
Library: "/Library/Frameworks/Python.framework/Versions/3.8/lib/libpython3.8.dylib"
Home: "/Library/Frameworks/Python.framework/Versions/3.8"
Status: NotLoaded
ExecutionMode: OutOfProcess

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Answer 2

Rashed Mohammed 2021-1-28

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Hi Mehul,

Since you are trying to load matlab engine (which is x86_64) from python3, It is necessary to run python3 also under rosetta2. I was able to reproduce your issue and running python3 under rosetta2 fixed the issue.

Hope this helps!