#!/usr/bin/env python

from flask import Flask

app = Flask(__name__)

@app.route('/')

@app.route('/hello/')

def hello_world():

return 'Hello World!\n'

@app.route('/hello/<username>') # dynamic route

def hello_user(username):

return 'Why Hello %s!\n' % username

if __name__ == '__main__':

app.run(host='0.0.0.0') # open for everyone