[SOLVED] Why am I receiving an error when importing modules housed in a package built in a Virtual Environment?

Issue

When I run my code in a virtual environment I am getting a different output than if I run the code in a container outside of a virtual environment. Same file structure, same code in AB.py, and same import statements in the init.py and AB.py files. See the image for more details. Very basic but I would just like to no why python does not recognize one of my modules when the parent container is located in a virtual environment. Thank you!

    Container A
    >AB.py
    >>Package_A
    >>>>__init__.py,
    >>>>Module_A.py,
    >>>>Module_B.py,
    >>>>Module_C.py
    
    
    Virtual Environment Container A
    >AB.py
    >>Package_A
    >>>>__init__.py,
    >>>>Module_A.py,
    >>>>Module_B.py,
    >>>>Module_B.py

[See image here] : https://i.stack.imgur.com/RJGpk.png

    ## Package AB.py     
    from Package_A import Mod_A, Mod_B, Mod_C
    Module_A.Func_A()
    Module_B.Func_B()
    Module_C.Func_C()
    
    
    ## __init__.py
    from a import func_a
    from b import func_b
    
    ## Module_A.py
    def Func_A():
        print("how")
    
    
    ## Module_B.py
    def Func_B():
        print("are")
    
    
    ## Module_C.py
    def Func_C():
        print("you")
    

Running AB.py in container Returns

how
are
you

Running AB.py in VIRTUAL ENVIRONMENT Returns

ModuleNotFoundError: No module named 'a'

Solution

Found a solution, I needed to change my import lin in my init.py file. I changed it from:

    from a import func_a
    from b import func_b

To

    from .a import func_a
    from .b import func_b

This was the case for both venv and non venv. I did not specify the parent folder.

Answered By - Joe L.

Answer Checked By - David Goodson (WPSolving Volunteer)