[FIXED] exec python script and mock missing modules

Issue

I am running a execfile() on python script but in this script there are calls to modules that I don't have. I would therefore like to replace them with fakeObject/mock

I have this instruction:

import mymodule.mtest.core as CCORE
API = CCORE.object()
API.initialize(sys.argv, comm=comm)

But i dont have mymodule.mtest.core and i want to replace CCORE.object() with a fake object containing the initialize() method

I tried someting like this:

sys.modules['mymodule'] = MyfakeObj

With MyFakeObj is a python module with a fake def initialiaze() method

But i have this error

ModuleNotFoundError: No module named 'mymodule.mtest'; 'mymodule' is not a package

How can i do this ?

Solution

thank you for your help. I tested your proposal but in my context the instructions

ith patch.object(mymodule.mtest.core, "object", return_value=Mock()): 

does not works,

on the other hand it put me on the track to use Mock()

I use like this:

sys.modules['mymodule'] = MagicMock()
sys.modules['mymodule.mtest'] = MagicMock()
sys.modules['mymodule.mtest.core'] = MagicMock()

And i can exec my script with the instructions

import mymodule.mtest.core 

the import no longer crashes

Answered By - jeyzorus