How to create a python 3 class to start MATLAB and keep it running
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I'm using matlab 2017b and python 3 on windows 10. I want to create a class that can start the matlab and keep it open. However, matlab closes right after I finished the python script. Here is the code:
import matlab.engine
class Test:
def __init__(self):
self.eng = matlab.engine.start_matlab("-desktop")
if __name__ == "__main__":
Test()
I can open the matlab in python console with the "start_matlab" command, but with this class I will keep failing to keep it open.
Anyone know how I could make this work?
Thanks
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Kojiro Saito
2020년 6월 2일
test.py
import os
class Test:
def __init__(self):
self.eng = os.system("matlab -r \"matlab.engine.shareEngine('myMatlabEngine')\"")
if __name__ == "__main__":
Test()
test2.py
import matlab.engine
eng = matlab.engine.connect_matlab('myMatlabEngine')
print(eng.sqrt(4.0))
Usage:
Open a terminal
python test.py
This keeps MATLAB session running.
Then, open another terminal and call test2.py.
python test2.py
댓글 수: 4
Kojiro Saito
2020년 6월 2일
Hi Andy, yes, as document explains, "If you exit Python with an engine still running, then Python automatically stops the engine and its MATLAB process.", so matlab.engine.start_matlab cannot keep MATLAB engine running if the Python is exited. That's why I've recommended to use matlab.engine.shareEngine. But Python's matlab.engine does not have shareEngine, so I proposed to use os.system command instead.
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