Standalone mcc app cannot import class within python module

I have an app made via mcc. In this app I need to call a python 2.7 class within a python 2.7 module. I am able to insert the path to the module to the python search path via

insert(py.sys.path, int32(0), PythonModulePath)

I am also able to import the module via

py.importlib.import_module('module')

whose return lists all the correct classes and modules.

but when I try to initialize the class py.module.class('init args') The complied class returns:

Unable to resolve the name py.module.class
MATLAB:undefinedVarOrClass

What is going on here? Why is it unable to identify the class?

Answer 1

[Divyank]

Hello @Jiaqi Li, it seems that the issue is with the syntax for accessing the class within the imported module.

Try accessing the class using the following code and see if that resolves the issue:

module = py.importlib.import_module('module')
MyClass = module.class
obj = MyClass('init args')

Answer 2

[Rushikesh]

MATLAB R2021b does not support calling python class names and initializing it using dot operator. Instead you need to use "py.setattr" to pass data to class constructor and "py.getattr" to access function object from class.

Seems like repeated question, here is reference to my detailed answer:

https://www.mathworks.com/matlabcentral/answers/1907170-how-to-importing-python-modules-in-mcc-compiled-standalone-app#answer_1523690