I get an error when using numpy in my python script in simulink

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Bastiaan 2023-10-9

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https://ww2.mathworks.cn/matlabcentral/answers/2030994-i-get-an-error-when-using-numpy-in-my-python-script-in-simulink

编辑： Bastiaan 2024-1-29

I try to use a python script (version 3.11 according to the pyenv command) as a function in simulink. I use python importer and it works fine when not using numpy. As soon as I start the script with 'import numpy as np' however, the blocks don't work anymore and I get the error:

MATLAB System block 'Mytester21/taketwo2_CreateArrayfivedim' error occurred when invoking 'setupImpl' method of 'taketwo2_CreateArrayfivedim'.

Caused by:

Invalid HandleObjectRef - Entry not found in the server table

Component:Simulink | Category:Block error

The python script itself does not matter, as this issue arises with various different python files. Can anyone help me with this?

(an additional issue that I have is that I need to restart my computer every time I rework something in the python file, an update through obj.view does not update the simulink output.)

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Abhishek 2024-1-26

Any idea why this error occurs ? I am still not able to solve this error for my simulink model when python code with numpy or other imports is imported using the python importer toolbox

Bastiaan 2024-1-29

编辑：Bastiaan 2024-1-29

Sorry for the late reply, I was away for a while.

If I remeber correctly, the issue was that I hadn't installed python in the correct location. This meant that numpy wasnt installed in the correct location, so Matlab couldn't find the module. A coworker fixed it for me, so I am not 100% how to fix it exactly, but at least you now know a possible reason.

Another reason why this didn't work, was that the python file and generated matlab file have to be in the working directory. You can't generate a path to the python file (for some reason), so it has to be in the active folder.

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