Matlab engine for python- redirect output to diary

Question

Omri Darwish 2017-6-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/346724-matlab-engine-for-python-redirect-output-to-diary

回答： Alan Frankel 2025-7-18

Hello, I'm running Matlab function using matlab engine (through python) and i want to redirect the function output into a file. My code:

eng = matlab.engine.start_matlab("-r")
eng.cd(sys.argv[1])
funcName = sys.argv[2]
eng.eval("clc; diary out.txt; " + funcName + "; diary off;")
eng.quit()

The function is running and the file out.txt created however the output is not written to it. Can someone help me solve this problem. Thanks!

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Arthur 2017-11-24

在 MATLAB Online 中打开

Same problem here.

Tried with this non-ascii diary workaround (from here) but this would unfortunately leave 'txt' var empty when called under python matlab engine.

% Output Command Window text to a text file
function saveCmdWinText(filename)
    cmdWinDoc = com.mathworks.mde.cmdwin.CmdWinDocument.getInstance;
    txt = char(cmdWinDoc.getText(0,cmdWinDoc.getLength));
    fid = fopen(filename,'W');
    fwrite(fid,txt,'uint16');  % store as 2-byte characters
    fclose(fid);
    %winopen(filename);  % in case you wish to verify...
end