On the MATLAB Apps tab, on the far right of the Apps section, click the arrow. In Application Deployment, click Library Compiler.

Alternately, you can open the Library Compiler app by entering libraryCompiler at the MATLAB prompt.

1. In the Type section of the toolstrip, click Python Package.

2. In the Exported Functions section of the toolstrip, specify the files of the MATLAB application that you want to deploy.

   For this example, select the makesqr.m file that you wrote earlier.

3. In the Packaging Options section of the toolstrip, decide whether to include the MATLAB Runtime installer in the generated application by selecting one of the options:

   • Runtime downloaded from web — Generate an installer that downloads the MATLAB Runtime and installs it along with the deployed MATLAB application. You can specify the file name of the installer.

   • Runtime included in package — Generate an application that includes the MATLAB Runtime installer. You can specify the file name of the installer.

   Note

   The first time you select this option, you are prompted to download the MATLAB Runtime installer.

Next, choose a name for your Python package. The Library Name field is automatically populated with makesqr as the name of the package. Rename it as MagicSquarePkg. For more information on naming requirements for the Python package, see Install and Import MATLAB Compiler SDK Python Packages.

Create Sample File

During packaging, MATLAB Compiler SDK can generate Python code that demonstrates how to call your MATLAB exported function. To generate Python code, create MATLAB sample files and add them to the project. The compiler converts this MATLAB code to Python code during packaging. For more information and limitations, see Create Sample Code to Call Exported Function.

To generate a new MATLAB sample file, click Create New Sample and select your MATLAB function. This opens up a MATLAB script for you to edit. The generated sample script calls your MATLAB function with arguments set to zero, which you should modify as necessary based on the intended behavior of your function.

Change x = 0 to x = 5, save the file, and return to the Library Compiler app.

% Sample script to demonstrate execution of function y = makesqr(x)
x = 5; % Initialize x here
y = makesqr(x);

Customize the packaged application and its appearance:

In the Library Compiler app, you can customize the installer, customize your application, and add more information about the application.

Package the Application

When you are finished selecting your packaging options, save your Library Compiler project and generate the packaged application.

1. Click Package. In the Save Project dialog box, specify the location to save the project.

2. In the Package dialog box, verify that Open output folder when process completes is selected. When the packaging process is complete, examine the generated output in the target folder.

At the system command prompt, navigate to the MagicSquarePkg folder.

Install the application using the generated installer or navigate to the folder that contains setup.py and install the package using the python command.

python -m pip install .

For more information on installing Python packages, see Install and Import MATLAB Compiler SDK Python Packages.

After installing the package, navigate to the samples folder that contains makesqrSample1.py.

The contents of makesqrSample1.py are shown below.

#!/usr/bin/env python
"""
Sample script that uses the MagicSquarePkg package created using
MATLAB Compiler SDK.

Refer to the MATLAB Compiler SDK documentation for more information.
"""

import MagicSquarePkg
# Import the matlab module only after you have imported 
# MATLAB Compiler SDK generated Python modules.
import matlab

try:
    my_MagicSquarePkg = MagicSquarePkg.initialize()
except Exception as e:
    print('Error initializing MagicSquarePkg package\n:{}'.format(e))
    exit(1)

try:
    xIn = matlab.double([5], size=(1, 1))
    yOut = my_MagicSquarePkg.makesqr(xIn)
    print(yOut, sep='\n')
except Exception as e:
    print('Error occurred during program execution\n:{}'.format(e))

my_MagicSquarePkg.terminate()

The Python sample application does the following:

If you have installed MATLAB Runtime, you can run the application at the system command prompt. For testing purposes, you can also run the command in the MATLAB Command Window by preceding the command with the ! operator.

python makesqrSample1.py

The Python sample application returns the same output as the sample MATLAB script.

[[17.0,24.0,1.0,8.0,15.0],[23.0,5.0,7.0,14.0,16.0],[4.0,6.0,13.0,20.0,22.0],
[10.0,12.0,19.0,21.0,3.0],[11.0,18.0,25.0,2.0,9.0]]