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Flask app with "submodules"

I am trying to develop an API with different "submodules". For example there is one called todo and another one called newsletter.

What I want to do is, I'd like to be able to run the modules themselves during development and I'd like to be able to run the whole API with it's submodules on the server.

My current folder structure looks like that

  - api
    - todo
      - todo
        - __init__.py
        - routes.py
        - utils.py
        - ...
      - README.md
      - requirements.txt
    - newsletter
      - ...
  - run.py

The aim is to be able to run this during development:

cd api/todo/todo
python3 run.py

And this on the server

python3 run.py

The routes should be relative:

During the production the path for one submodule should be like that


But on the server they should always include the name of submodule


Moreover I'd like to be able to put the code of every submodule in one GitHub repository, so that other persons will be able to run them on themselves.

I am currently stuck on importing the modules. Can I fix the path problem by using Flasks Blueprints?

I would appreciate any help very much!

like image 409
Developer Avatar asked Mar 07 '23 13:03


1 Answers

You can use the following project structure:


In the app.api.todo.__init__.py:

from flask import Blueprint

todo = Blueprint("todo", __name__)

In the app.api.newsletter.__init__.py:

from flask import Blueprint

newsletter = Blueprint("newsletter", __name__)

In the app.__init__.py:

from flask import FLask

app = Flask(__name__)

from app.api.todo import todo
from app.api.newsletter import newsletter

app.register_blueprint(todo, url_prefix="/api/todo")
app.register_blueprint(newsletter, url_prefix="/api/newsletter")

if __name__ == "__main__":


And you can change which blueprint is registered and what url prefix bound to blueprint with environment variable.

like image 178
stamaimer Avatar answered Mar 17 '23 05:03