Minimal Flask application - Basic package design pattern Create a structure like this: `./run.py` `./webapp/__init__.py` `./webapp/views.py`

__init__.py

#!/usr/bin/python
# coding: utf-8
""" Filename:     __init__.py
    Purpose:      This file is required to structure the web service as a
                  package, to be able to define routes in multiple modules.
                  This is the most basic design pattern for multiple files
                  Flask apps: http://flask.pocoo.org/docs/patterns/packages/
    Requirements: 
    Author:       Cédric Beuzit
"""
from flask import Flask

app = Flask(__name__)

# application wide global variables and config parameters must be defined here
# (not in `run.py`) for being able to import them in the beginning of the
# views files but we can perfectly imagine a smarter config procedure
app.config['HELLO_WORLD'] = 'Hello Flask!'

# The views modules that contain the application's routes are imported here
# Importing views modules MUST BE in the end of the file to avoid problems
# related to circular imports http://flask.pocoo.org/docs/patterns/packages
import webapp.views

run.py

#!/usr/bin/python
# coding: utf-8
""" Filename:     run.py
    Purpose:      This file runs the Flask application service
    Requirements: Flask
    Author:       Cédric Beuzit
"""
from webapp import app

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

views.py

#!/usr/bin/python
# coding: utf-8
""" Filename:     views.py
    Purpose:      This file is one of the views file that can contain the
                  routes for the application
    Requirements: 
    Author:       Cédric Beuzit
"""
from webapp import app

# importing application wide parameters and global variables that have been
# defined in __init__.py
message = app.config['HELLO_WORLD']

@app.route('/')
def webapp():
    return message

Can you suggest where should we add our DB connection check, logger/sentry initialization?