How to handle multi Matlab return values in Python

25 次查看（过去 30 天）
Jason Shih
Jason Shih 2015-7-1
评论： Bo Li 2017-2-6
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

请先登录，再回答此问题。

采纳的回答

Bo Li
Bo Li 2015-7-1
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)
  3 个评论
显示 1更早的评论
Petru-Daniel Tudosiu
Petru-Daniel Tudosiu 2017-2-5
@Bo Li I tried what you said and it says that the function did not expect that explicit variable. I am using Python 3.4 with Matlab R2016b. Can You please help me?
Bo Li
Bo Li 2017-2-6
I need more details maybe sample code to understand "the function did not expect that explicit variable".
A simple MATLAB function that returns multiple output is gcd:
>>> a,b,c=eng.gcd(8,10, nargout=3)
>>> a,b,c
(2L, -1L, 1L)

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Call MATLAB from Python 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by