Error - MATLAB expression <output of myfunc> is not numeric

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ARUN 2021-2-15

0
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https://ww2.mathworks.cn/matlabcentral/answers/745812-error-matlab-expression-output-of-myfunc-is-not-numeric

评论： Walter Roberson 2021-2-15

I am trying to pass a value from the python code to the Matlab function in simulink and I am getting the following error:

Error - MATLAB expression <output of myfunc> is not numeric.

Matlab function -

function y = fcn
    y = 0; 
    coder.extrinsic('py.throttle.test') 
    y = py.throttle.test();
end

Python code(throttle.py)

def test():
    throttle = 5
    return throttle

any idea how this could be solved?

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ARUN 2021-2-15

I am using MATLAB R2020b and Windows 10

Walter Roberson 2021-2-15

在 MATLAB Online 中打开

filename = 'throttle.py';
[fid, msg] = fopen(filename, 'wt');
if fid < 0
    error('Failed to open file "%s" because "%s"', filename, msg);
end
fprintf(fid, 'def test():\n');
fprintf(fid, '    throttle = 5\n');
fprintf(fid, '    return throttle\n');
fclose(fid)
ans = 0
y = py.throttle.test();
class(y)
ans = 'int64'
disp(y)
   5