How to individual run file beside main.py in FASTAPI platform?

[apexbb]

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Example Code

in db/database.py

from elasticsearch import Elasticsearch
from dataclasses import dataclass
from core.config import Settings
# from metering_api_gateway.core.config import Settings

Description

How can i individual test/run a python file beside main.py in FASTAPI framework?

Operating System

Linux

Operating System Details

I have similar question related to following

FastAPI Version

0.82

Python Version

3.8

Additional Context

How can i indiviudual test a file in FASTAPI framework? i run by poetry run python3 db/database.py it shows error "File "db/database.py", line 3, in from core.config import Settings ModuleNotFoundError: No module named 'core'"

[iudeen]

You should run from project root, right? i.e, your imports are relative to project root. And it is same for all python applications (or packages).

Edit: typo - project root

[mbroton]

I think that it's a problem related to just imports. If you are running ./db/database.py then your project's root is not in PYTHONPATH. Since your imports are not relative, Python can't find them.

To fix this, you can for instance:

• run db/database.py with command python3 -m db.database (but I'm not sure how does it work with poetry) - this will ensure that your project's root is in path,
• add project's root to environment variable PYTHONPATH,
• change imports to relative,
• or, I guess, many more...

[ligantx]

Can you just do the whole code in database.py a function (e.g. runDatabase() and then in your root (i.e. main.py) do: from database.py import * runDatabase()

[tiangolo]

Thanks for the help here everyone! 👏 🙇

If that solves the original problem, then you can close this issue @apexbb ✔️

If not, please add a self-contained, minimal, reproducible, example that I can copy-paste to replicate it.

[github-actions[bot]]

Assuming the original need was handled, this will be automatically closed now. But feel free to add more comments or create new issues or PRs.