#!/usr/bin/env python
import os
from flask import Flask

app = Flask(__name__)

@app.route('/')
def root():
	return 'Tunezout'

if __name__ == "__main__":
	# Bind to PORT if defined, otherwise default to 5000.
	port = int(os.environ.get('PORT', 5000))
	app.run(host='0.0.0.0', port=port)

Create app.py.