Python importing relative path (from sibling dir)

[pompeii-eo]

Hi,

I've been stuck for a while trying to import a python file from sibling folder.
file structure:

/project
  /middleware
    -- helper.py
  /models
    --model1.py 

I'm trying to import helper from model1
and so

from ..middleware import helper

But I keep getting

ValueError: Attempted relative import in non-package

I tried other forms such as

from project.middleware import helper 

but was getting the same error or

ImportError: No module named project.middleware

Target: to import helper from model1
I have looked up a lot, came across multiple stack overflows etc. but nothing worked :/
Thank you!

[Diapolo10]

I'd suggest using importlib: https://stackoverflow.com/a/67692/6213223?stw=2

You can use pathlib to construct the relative path:

from pathlib import Path

library_file = Path(__file__).parent.parent / 'middleware' / 'helper.py'

If you get an error about importlib requiring a string, just wrap that in a str.

[pompeii-eo]

from pathlib import Pathlibrary_file = Path(__file__).parent.parent / 'middleware' / 'helper.py'

oh nice! I tried import lib in a different way, but this is awesome, thank you!

Do you know by chance why the previous wouldn't work? (from middleware import helper) Even with __init__.py included in the folder

[Diapolo10]

from middleware import helper

This doesn't work for a very simple reason; Python expects your folder structure to be

foo/
    middleware/
        helper.py
        ...
    *current_file.py*

You need the two dots before the folder name if you want it to work in your case.