Can't get Flask App to run after Re-Organizing Project Directory-CodePudding

I started building my flask app with a very basic structure detailed here, basically everything in one directory. As I have added more dependencies to my project, the need to separate my app into individual components has come up. Here is a look at how I have everything organized right now:

Real-Life-Application
│
├── App
│   ├── UI
│   │   ├── static
│   │   │   ├── css
│   │   │   │   └── main.css
│   │   │   ├── images
│   │   │   │   ├── album_placeholder.jpeg
│   │   │   │   ├── header.jpeg
│   │   │   │   └── logo.png
│   │   │   └── javascript
│   │   │       ├── create.js
│   │   │       └── tracks.js
│   │   └── templates
│   │       ├── base.html
│   │       ├── create.html
│   │       ├── index.html
│   │       ├── information.html
│   │       └── tracks.html
│   ├── __init__.py
│   ├── authenticate.py
│   ├── db_actions.py
│   ├── routes.py
│   ├── services.py
│   └── user_operations.py
├── Pipfile
├── Pipfile.lock
├── Procfile
├── README.md
├── Testing
│   ├── __init__.py
│   └── testing.py
├── __pycache__
│   ├── authenticate.cpython-39.pyc
│   ├── config.cpython-39.pyc
│   ├── main.cpython-39.pyc
│   ├── services.cpython-39.pyc
│   └── user_operations.cpython-39.pyc
├── config.py
├── requirements.txt
├── run.py
└── setup.py

My problem is that after running the basic commands export FLASK_APP=run.py & flask run I get the following error: Error: While importing 'run', an ImportError was raised.

I can't figure out what is causing this error. Any insight would be greatly appreciated. Here are the contents of run.py:

from App import create_app

app = create_app()

if __name__ == "__main__":
    app.run(debug=True)

Contents of App/ init.py:

from flask import Flask
import config
from flask_bootstrap import Bootstrap
from apscheduler.schedulers.background import BackgroundScheduler
import sqlalchemy

def create_app() -> Flask:
    app = Flask(__name__)
    app.config.from_object(config)
    app.secret_key = app.config['CLIENT_SECRET']

    # connect to local instance of mysqlDB server
    engine = sqlalchemy.create_engine('sqlite:///:memory:', echo=True)

    # create session and base declarative
    from sqlalchemy.orm import sessionmaker
    Session = sessionmaker(bind=engine)

    from sqlalchemy.ext.declarative import declarative_base
    Base = declarative_base()

    # make sure user table is created
    from App.user_operations import User
    Base.metadata.create_all(engine)

    # schedule updates for the TopTracks playlists
    from App.services import updatePlaylists
    scheduler = BackgroundScheduler()
    scheduler.add_job(updatePlaylists, trigger='interval', days=1)
    scheduler.start()

    import App.routes
    bootstrap = Bootstrap(app)
    
    return app

Contents of App/routes.py:

import logging
import time

# Flask Imports
from flask import (jsonify, make_response, redirect, render_template,
                   request, session)

# Local Imports
from authenticate import createStateKey, getToken
from App import app
from services import (addTracksPlaylist, createPlaylist, getAllTopTracks,
                      getRecommendedTracks, getTopTracksURI,searchSpotify,
                      createRadarChart, getLikedTrackIds, likedTrackIdsDataFrame,
                      normalizeDf)
from user_operations import (addUser, getUserInformation)

@app.route('/')
@app.route('/index')
def index():
    """ 
    Homepage.
    """
    return render_template('index.html')

# More route definitions come after this of course.

Contents of config.py

CLIENT_ID = ''
CLIENT_SECRET = ''
REDIRECT_URI = 'http://127.0.0.1:5000/callback'
RESPONSE_TYPE = 'code'
GRANT_TYPE = 'authorization_code'
TOKEN_URL = ''
SCOPE = 'user-read-email'
AUTHORIZATION = 'Authorization: Basic *<base64 encoded client_id:client_secret>*'
DATABASE_PASSWORD = ''
DATABASE_NAME = 'DB'

Again, I really appreciate anyone who takes the time to help.

CodePudding user response：

Big thanks to @furas. My issue was not in any of the files in the original question. I had to run python run.py in order to get a more in depth logging response that included a Traceback report. The Traceback I received uncovered a Circular Import I had within my application after restructuring.

At times simply running flask run would provide a Traceback to the problem, but Im guessing that when the issue is with the initialization of the app flask run is not enough