In the Python API, how can I redirect the output of an asynchronous function call of a function without return value?
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Sven-Eric Krüger
am 16 Feb. 2017
Bearbeitet: Sven-Eric Krüger
am 14 Mai 2018
I am using the Python API and I want to redirect the output of an asynchronously called function without return value. Is this maybe impossible?
My Python Script looks a little bit like this:
import matlab.engine as eng
import StringIO
out = StringIO.StringIO()
MAT = eng.start_matlab()
ret = MAT.func('arg', async=True, nargout=0, stdout=out)
while not ret.done() : pass
print out.getvalue()
MAT.quit()
When running this script, there is only a line feed / carriage return printed. The return value of
ret.result()
is "None".
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Bo Li
am 16 Feb. 2017
What about adding "ret.result()" before printing the output buffer like following?
while not ret.done() : pass
ret.result()
print out.getvalue()
3 Kommentare
Esteban Henriques
am 11 Mai 2018
Bearbeitet: Esteban Henriques
am 11 Mai 2018
From:
def result(self, timeout=None):
in fevalfuture.py, it seems that it is not possible to get any feedback from the out stream until the call is done. Doesn't this at least in part defeat the purpose of an async call?
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