Exporting Matlab code as Python package: Coolprop dependency error

I have a Matlab code that accesses python wrapper for CoolProp and uses CoolProp.CoolProp.PropsSI function calls to get state properties in the form of py.CoolProp.CoolProp.PropsSI(...).

For example:

function T = test(p)
T= py.CoolProp.CoolProp.PropsSI('T','P',p,'Q',0,"Nitrogen");
end

If you run it from Matlab, everything works.

Following the steps in Create Python Application Using Library Compiler App I exported the Matlab functions as a python package. It is explicitly stated that the dependencies are recognized and added automatically. However, I encountered the following error when a function is called (see Package MATLAB Function and Deploy to Python Application) in Python:

import matlab_package as mtl
handle = mtl.initialize()
T = handle.test(100000)

MatlabRuntimeError: An error occurred when evaluating the result from a function. Details: File ....m, line ..., in ...\mcrCache23.2\...\...\....m, line ..., in run_model Unable to resolve the name 'py.CoolProp.CoolProp.PropsSI'.

I am not sure how I need to export it so that the dependency works. Any help?

UPDATE:

I narrowed down the issue to the InProcess operation of MatlabRuntime. Is there a way to invoke it Out-Of-Process? I have included

pyenv(ExecutionMode="OutOfProcess")

into the packaged matlab function, but it doesn't seem help it.

Answer 1

[Oliver Jaehrig]

Please consider following this workflow:

https://www.mathworks.com/matlabcentral/answers/387750-is-it-possible-to-compile-matlab-programs-that-contain-python-code-using-matlab-compiler

[VS]

sadly it didn't help. I believe the problem lies in the execution mode of the Matlab runtime. It runs InProcess, and I cannot find a way to invoke it Out-Of-Process