Signal processing toolbox license error when accessing MATLAB from Python.

I'm using MATLAB 2019b, Python 3.7.9 on Windows 10. In my python code, I have the below lines

import matlab

import matlab.engine

mat_eng = matlab.engine.start_matlab()

print(mat_eng.license('test','Signal_Toolbox'))

This always prints 1. However, when I try to access a signal processing toolbox function like resample, I see a license checkout error as below:

License checkout failed.

License Manager Error 0

Troubleshoot this issue by visiting:

https://www.mathworks.com/support/lme/R2019b/0

Diagnostic Information:

Feature: Signal_Toolbox

...

I'm able to use the resampler from MATLB directly. How do I solve this error?

Answer 1

[Udit06]

Hi Upendra,

You can refer to the following MATLAB answer which handles a similar issue that you are facing.

https://www.mathworks.com/matlabcentral/answers/1665214-signal-toolbox-licenses-error-while-using-matlab-engine-for-python?s_tid=answers_rc1-2_p2_MLT

I hope this helps.