Absolute imports works either in tests or in uvicorn

I have a bit of an odd problem, namely I have this structure:

 |-tests
 | |-__init__.py
 | |-domain
 | | |-items
 | | | |-test_service.py
 | |-test_app.py
 |-poetry_demo
 | |-__init__.py
 | |-app.py
 | |-domain
 | | |-__init__.py
 | | |-items
 | | | |-service.py
 | | | |-controller.py
 | | | |-__init__.py
 | | | |-model.py

And in app.py I do

from fastapi import FastAPI

from poetry_demo.domain.items.controller import ItemsController
from poetry_demo.domain.items.service import ItemsService

app = FastAPI()
app.include_router(ItemsController(service=ItemsService).router, prefix="/items")

And when I go into poetry_demo dir and run uvicorn with uvicorn app:app --reload, I am getting an error:

    from poetry_demo.domain.items.controller import ItemsController
ModuleNotFoundError: No module named 'poetry_demo'

But on the same time, when I run pytest from the main directory (one above poetry_demo), it works perfectly.

To have app running, I need to change app.py imports to:

from domain.items.controller import ItemsController
from domain.items.service import ItemsService

And then it works, but... tests are breaking.

I tried changing import to relative (.domain...), but then I am getting

    from .domain.items.controller import ItemsController
ImportError: attempted relative import with no known parent package

Any help is appreciated

Okay, so I've solved the problem. Running everything from the top directory helped.

Instead of

uvicorn app:app --reload

I do

uvicorn poetry-demo.app:app --reload

I also run tests from there (or from IDE, it also works perfectly).

Maybe this'll help someone