Running MATLAB from Python

Question

I'm teaching myself a little bit of programming in python and also matlab. And I need to run a couple of functions I wrote in python with matlab.

I've followed the basic install instructions for pymatlab and python(x,y). When I try to create a MATLAB session with the following code:

import pymatlab
session = pymatlab.session_factory()

I get the following error:

Exception AttributeError: "'MatlabSession' object has no attribute 'engine'" in <bound method MatlabSession.__del__ of <pymatlab.matlab.MatlabSession object at 0x03654AF0>> ignored

Traceback (most recent call last):
  File "<pyshell#1>", line 1, in <module>
    session = pymatlab.session_factory()
  File "C:\Python27\lib\site-packages\pymatlab\sessionfactory.py", line 51, in session_factory
    session = MatlabSession(path=basedir,bufsize=output_buffer_size)
TypeError: __init__() got an unexpected keyword argument 'path'

Help please!

This seems to be a compatibility issue. Which ML-Version, which python version and which OS? — Daniel
– Daniel, Commented Nov 29, 2013 at 20:44
Daniel, thanks for the quick response - I somehow missed it! I'm running a 64bit version of windows, but 32bit versions of MATLAB, Python, numpy, and pymatlab unfortunately. I believe the officially supported versions of numpy are 32bit.. — user3050521
– user3050521, Commented Dec 2, 2013 at 16:54

samuel · Accepted Answer · 2013-12-11 00:31:50Z

2

It's a bug need fixed in windows platform. you can open the file "C:\Python27\lib\site-packages\pymatlab\sessionfactory.py" and locate the line 51, remove argument prefix "path="

MatlabSession(path=basedir,bufsize=output_buffer_size)

Change into

MatlabSession(basedir,bufsize=output_buffer_size)

Then you can enjoy your pymatlab.

answered Dec 11, 2013 at 0:31

samuel

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1 Comment

lib Over a year ago

in the last version, you can use this patch sourceforge.net/p/pymatlab/tickets/2 (so far the patch is not in the release)

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