Running MATLAB engine from MATLAB

Currently I work on a project where I have to use the MATLAB engine in Python. This Python module I want to use in MATLAB. I.e. I start a Python module in MATLAB which starts the MATLAB engine and calls a function in MATLAB which return value then is processed in my Python module. The return value from the Python module then should be further processed in MATLAB.

I get this error message:

Error using enginesession>__init__ (line 8)
Python Error: EngineError: MATLAB process session cannot be initialized.

Error in __init__><module> (line 82)
_session = EngineSession()

Error in __init__>import_module (line 37)
    __import__(name)

I get a similar error if I try to load the MATLAB engine from MATLAB by using

py.importlib.import_module('matlab.engine')

Is there a way to solve my issue or is this just simply not possible with the MATLAB engine?

[Stephan]

Could you provide your python code and data (If needed) to run the code?

In which step of your process do you get an error? Last step? First? Please clarify.

[Kevin Chng]

What version of python are you using?

[Adrian]

"""
Loads parameters from mat-files and checks if parameters are missing or not.
If parameters are missing they get default values.
Note: matlab.engine should be imported before ANNarchy as they interfere
with each other.
"""
import matlab.engine
import globalParams
from ANNarchy import *
# Initialization
expType = globalParams.expType # get type of experiment
#expType = 'SSDtester'
eng = matlab.engine.start_matlab()
showDisp = False
pathSSD = 'mat/original/'
pathStim = 'mat/Stim/'
def loadParam():

    # for SSDtester
    if expType == "SSDtester":
        tmp1 = eng.mat2py(pathSSD+'main.mat','parameter')
        d = tmp1['parameter']
        tmp2 = eng.mat2py(pathSSD+'test.mat','parameter')
        tmp2 = tmp2['parameter']
        tmp3 = eng.mat2py(pathSSD+'ssd.mat', 'parameter')
        tmp3 = tmp3['parameter']
        d.update(tmp2)
        d.update(tmp3)

...

mat2py

function d = mat2py(file, data)
%MAT2PY Return a MATLAB variable to pass it to Python
%   File should be a .mat-file and data a variable/structure/array in the
%   file
d = load(file, data);
end

I use Python 3.6. I get an error when importing the modules. The error occurs when I run the module in MATLAB via the API and matlab.engine is imported, to be precise. If I run the module from the Python shell it works without errors.

[Hadi Salimi]

Did you find any soloutions regarding your issue?