MATLAB: How to handle multi Matlab return values in Python

MATLABpython

I'm using Matlab 2014b, and I want to call Matlab function from Python(2.7.6). Here is my Python script:
 import matlab.engine as meng
 import matlab as mat
 eng = meng.start_matlab()
 try:
     x,y = eng.Fun_Py(3,4)
     print x
     print y
     eng.quit()
 except: 
     print "error in python script"
     eng.quit()
and here is my Matlab script:
function [x,y]=Fun_Py(a,b) x=zeros(a,b); y=sum(x); end
When I ran the Python scipt, I got "error in python script".How can I solve this problem? Any help is appreciate.
Jason Shih

Best Answer

There are two things need to be done.
1. Add the folder where Fun_Py.m is located into MATLAB path from MATLAB command window:
http://www.mathworks.com/help/matlab/ref/addpath.html?searchHighlight=addpath
Or you can change the current folder in MATLAB to where Fun_Py.m is located, for example if it is located in c:\temp:
 eng.cd(r'C:\temp)
2. Set the number of output to 2 if 2 output is expected:
 x,y = eng.Fun_Py(3,4, nargout=2)
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