Calling python from matlab isnt working

Hello,

I am trying to run a python script from matlab and for every run i do i recieve this problem:

Unable to resolve the name py.test.our_function.

The python script is this:

import numpy
def our_function(text):
	print('%s %f' % (text, numpy.nan))

I tried to run pyenv, and the correct path is shown.

Thanks for your help, Ron

Answer 1

[Dinesh Yadav]

You can use MATLAB’s system function which will execute your python code as you would do on command prompt in Windows.

system('python pythonfilename.py')
system('python pythonfilename.py argument')

If you are passing a single argument.

Also check that your folder containing your python file is added to MATLAB path.

Answer 2

[Shrinidhi KR]

I suppose that your python script has the filename as test.py, which you are calling in matlab as py.test.our_function('xyz'). So the filename is causing the issue here, it is overshadowed by the other in-built module inside python installed directory. You can verify this as follows:

>> py.importlib.import_module('test')

ans = 

  Python module with no properties.

    <module 'test' from 'C:\\Users\\XXXX\\AppData\\Local\\Programs\\Python\\Python36\\lib\\test\\__init__.py'>

So you can change the file name of your python script to something else like mytest.py, which works

>> py.importlib.import_module('mytest')

ans = 

  Python module with properties:

    our_function: [1×1 py.function]
           numpy: [1×1 py.module]

    <module 'mytest' from 'H:\\Documents\\ML Answers\\mytest.py'>

>> py.mytest.our_function('abc')
abc nan