Call a Python Function

I am trying to call a Python function and then return that data to the workspace. The function I am calling has two input parameters, a 2d array and a list. I need the function to return the updated 2d array and updated list.

I looked, but I just cannot figure out how to do it.

Thanks so much in advance!!

Answer 1

[Raghava S N]

Hello @bafflingbill23,

To call a python function from MATLAB and store the output of the python function in the MATLAB workspace, you may follow the below steps-

1. Configure your system to use python. To do so, follow the steps mentioned in this MATLAB documentation link - https://www.mathworks.com/help/releases/R2024b/matlab/matlab_external/install-supported-python-implementation.html#bujjwjn
2. Create the input array and list using the “py.list” class - https://www.mathworks.com/help/matlab/matlab_external/pythonlistvariables.html#:~:text=To%20call%20a%20Python%20function%20that%20takes%20a%20list%20input%20argument%2C%20create%20a%20py.list%20variable
3. Load the python module and call the python function using the “py.importlib.import_module” function. For more information on importing python modules, refer to this link - https://www.mathworks.com/help/matlab/matlab_external/call-user-defined-custom-module.html
4. The function will return the updated values as “py.list” objects which can then be converted to a MATLAB variable by calling the “cell” function. Refer to this link for more details about the “cell” function - https://www.mathworks.com/help/matlab/ref/cell.html#d126e195291:~:text=C%20%3D%20cell(n)%20returns%20an%20n%2Dby%2Dn%20cell%20array%20of%20empty%20matrices.

The results matrices and vectors can then be seen in the MATLAB workspace.

Hope this helps!