I would like to call a long-running matlab function from python and print its output while it is running to see the progress. My problem is that out and err is empty if I run with async=True. Why, and how can I fix it? Here is my python code:
import StringIO
import matlab.engine
import time
out = StringIO.StringIO()
err = StringIO.StringIO()
eng = matlab.engine.start_matlab()
future = eng.long_running(5, stdout=out, stderr=err, async=True)
while not future.done():
time.sleep(2)
print 'output', out.getvalue(), err.getvalue()
print 'result', future.result()
eng.quit()
And the matlab function:
function [ result ] = long_running( secs )
result = 0;
disp('Long_running function started running...')
for i = 1:secs
fprintf('%d iteration\n',i)
result = result + 1;
pause(1);
end
disp('Long_running function finished running.')
end
