How to make a script return an output argument in python?

Question

yashvin 2015-7-29

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/231580-how-to-make-a-script-return-an-output-argument-in-python

回答： Robert Snoeberger 2015-7-29

采纳的回答： Robert Snoeberger

在 MATLAB Online 中打开

Hi I have linked python to matlab. I am running a script written in MATLAB in python. I am using as reference

http://www.mathworks.com/help/matlab/matlab_external/call-user-script-and-function-from-python.html

I want my script to return the variable in my python window. How i can do it? Can i avoid this without converting it to a function?

b = 5;
h = 3;
a = 0.5*(b.* h)
import matlab.engine
eng = matlab.engine.start_matlab()
eng.triarea(nargout=0)

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yashvin 2015-7-29

在 MATLAB Online 中打开

After you save the file, start Python and call the script.
import matlab.engine
eng = matlab.engine.start_matlab()
eng.triarea(nargout=0)
a =
      7.5000
Specify nargout=0. Although the script prints output, it returns no output arguments to Python.
Convert the script to a function and call the function from the engine. Open the MATLAB editor to edit the file.
eng.edit('triarea',nargout=0)

I want for example return the variable a in my python window! How can i do that?

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Answer 1

Robert Snoeberger 2015-7-29

4
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/231580-how-to-make-a-script-return-an-output-argument-in-python#answer_187580

在 MATLAB Online 中打开

Scripts do not return output arguments, but they do store results in variables in the base workspace [1]. You can access the MATLAB engine workspace from Python [2].

Example

>>> import matlab.engine
>>> eng = matlab.engine.start_matlab()
>>> eng.triarea(nargout=0)
a =
      7.5000
>>> a = eng.workspace['a'] # get the variable 'a' from the workspace
>>> a
7.5
>>>