[Python] Python not recognizing imports

I have the following structure in my code:

src/
__init__.py
models/
__init__.py
routers/
__init__.py
concrete_model/
__init__.py
routes.py
repositories/
__init__.py
main.py
tests/
__init__.py
routers/
concrete_model/
__init__.py
requirements.txt
readme.md


But I'm having trouble with the imports for some reason. More concretely:

src/routes/routes.py

api_router = APIRouter()


main.py

from src.routes.routes import api_router


Is failing with ModuleNotFoundError: No module named 'src'.

If it's any worth, this is how I have my Python version set up:

pyenv install 3.13.2
pyenv exec python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt


This is a fastapi app, so I'm tying to run

fastapi dev src/main.py

Running tests fail similarly. What is going on?

When trying to run my app

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