Flask

Most basic

from flask import Flask
app = Flask(__name__)

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

Flask Run

Flask run finds trys to find right file to run and loads .env too

flask run -h 0.0.0.0 -p 80

flask run -h 0.0.0.0 -p 80

export FLASK_DEBUG=1//to enable reloader
flask run