Answers for "what is FLASK_APP set to"

flask app starter

# Extremely simple flask application, will display 'Hello World!' on the screen when you run it
# Access it by running it, then going to whatever port its running on (It'll say which port it's running on).
from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_world():
    return 'Hello, World!'

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

flask app

# -*- coding: utf-8 -*-
# Librarys
from flask import Flask, render_template
from flask_sqlalchemy import SQLAlchemy

# Variables
app = Flask(__name__)

# Settings
app.config['DEBUG'] = True
app.config['SECRET_KEY'] = 'secret'



app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.sqlite'
app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
db = SQLAlchemy()
db.init_app(app)



# Views
@app.route('/', methods=('GET', 'POST'))
def index():
    return render_template('name.html')


# Run
if __name__ == '__main__':
    app.run()