Suppose that you have the following .m script:
% foo.m
function foo = run()
disp('Hello!!');
foo = 1;
end
Now, you execute foo.m from python with:
import matlab.engine
eng = matlab.engine.start_matlab()
py_foo = eng.foo()
This code will set py_foo = 1
AND will display the output Hello
. How do I suppress matlab output?
I answer my question.
I didn't read carefully the matlab documentation about the Python API. Following the instruction at this page, the correct answer to my question is:
import matlab.engine
import io
eng = matlab.engine.start_matlab(stdout=io.StringIO())
py_foo = eng.foo()
Out:
// no output! :D
Just in case you are using exec()
(and be very sure about user inputs in this case), remember to import io
inside the string passed to exec(), i.e.:
import matlab.engine
import io // this is useless!!
eng = matlab.engine.start_matlab()
str = "import io;eng.foo(stdout=io.stringIO())" // put it here
loc = {}
exec(str, {"eng" : eng}, loc)
py_foo = loc["foo"]