Is it possible to call from Matlab (with py) a Python code that itself call a Matlab function through matlab.engine ?

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Thierry Mazoyer 2019-9-12

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评论： Eric Delgado 2021-2-22

Hi evrybody

Everything's in the title so far !

I have a Python program using Matlab scripts through matlab module. Everything's fine when running directly from Python.

Then I try to use it from Matlab with py but I get the following error: "Python Error: ModuleNotFoundError: No module named 'matlab.engine'; 'matlab' is not a package"

Digging into mixing Matlab and Python since a short time, I've been discovering how powerfull are the offered functionalities... Would be great to be able to push further!

Any possibility to do that ?

Thanks in advance

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Answer 1

Gaurav Garg 2019-9-16

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Hi,

In my understanding, what you are trying to do is to execute a python code file in a MATLAB script. However, MATLAB provides support for selected functions/data types.

A possible workaround to the problem is to include the statements in a module and then try the steps defined in the link, or, you could also run an operating system command (system) and return the output.

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Eric Delgado 2021-2-22

@Gaurav Garg, I am having the same issue... I was calling a Python module inside Matlab, but I don't know what happened... it's not working anymore for some modules. For example, I still import "math module", but not "numpy module". It makes no sense (for me). Others posts about the same issue:

https://www.mathworks.com/matlabcentral/answers/722573-python-error-modulenotfounderror-no-module-named-numpy

https://www.mathworks.com/matlabcentral/answers/463408-python-error-modulenotfounderror-no-module-named-sklearn

I run Matlab from Anaconda Prompt (wich put all Python folders and subfolders into Matlab path).

Eric Delgado 2021-2-22

Guys, I figure out what happened with my issue... I had two instances of Python installed on my computer. So Matlab was pointing to the raw version of Python (without Numpy and others modules).

So I just configure the right version of Python and it's allright now. :)

pyenv('Version', 'C:\ProgramData\Anaconda3\python.exe')

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