ModuleNotFoundError even though the Module is present

I am getting a ModuleNotFoundError for a module that exists. I have a __init__.py and imported sys but I am still getting a ModuleNotFoundError error on my django error.

My file structure:

|-my_app
   |-folder1
     |-__init__.py
     |-calc.py
   |-folder2
     |-__init__.py
     |-test.py

I want to import a function from test.py in calc.py. This is my code:

import sys
from folder2.test import func1, func2

#my code

When I run this, I am getting this error:
ModuleNotFoundError: No module named 'folder2.test'

How can I fix this error?