How to add Python Libraries which are referenced in a Python routine

I want to call a python routine from Matlab and run it and get the resultant data back from the routine to process in Matlab. The python routine "myfunc.py" imports a bunch of libraries, numpy, time and others. When I go through the Matlab explaination of how to call a python function I get an error saying it can't find numpy.

Error using mymod><module> (line 3)

Python Error: ModuleNotFoundError: No module named 'numpy'

Error in <frozen importlib>_call_with_frames_removed (line 219)

Error in <frozen importlib>exec_module (line 728)

Error in <frozen importlib>_exec (line 630)

Error in __init__>reload (line 169)

I have looked at the references in Matlab "https://www.mathworks.com/help/matlab/matlab_external/differences-between-matlab-python.html" and others but they seem to just show how to call a function defined inside a library. Can you call a function like myfunc.py , shown below, and use it even if it imports libraries ?

Looks like I can run a function "add2" in the myfunc1.py file by using the following

val = py.myfunc1.add2(2,3) ---> Will work

BUT

val = py.myfunc2.add2(4,5) ---> will give me errors that it can't find the libraries numpy and/or time

DO I HAVE TO LOOK INTO EVERY PYTHON FILE AND SOMEHOW ADD THOSE LIBRARIES ONE AT A TIME SO MATLAB SEES THEM?

------ Python Code ------------------------

myfunc1.py

def add2 (a,b):

c = a+b

return c

myfunc2.py

import numpy as np

import time

def add2(a,b):

numsum = np.add(a,b)

return numsum

Answer 1

[Sean de Wolski]

Are you sure the python environment (specified by pyenv) is numpy aware?

Answer 2

[Tom Sutherland]

I am running Spyder(Python 3.8) and the python files work there. How do I tell where Spyder is getting numpy from and how to tell Matlab to get it from the same place?

Answer 3

[Tom Sutherland]

My Matlab

PythonEnvironment with properties:

Version: "3.7"

Executable: "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\python.exe"

Library: "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64\python37.dll"

Home: "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python37_64"

Status: Loaded

ExecutionMode: InProcess

ProcessID: "16392"

ProcessName: "MATLAB"

But I have installed Anaconda3 and using Spyder and its packages are in

C:\ProgramData\Anaconda3\Lib\site-packages

How do I get Matlab to "see" them or use them?

[Sean de Wolski]

Specify the executable or version in the input to pyenv(). It should be pointing at Python 3.8 not Python 3.7.