Example Python WSGI app which displays the hostname of the system it runs on when accessing /hostname

requirements.txt

flask

testapp.py

import socket
from flask import Flask, request

app = Flask(__name__)

@app.route("/hostname/")
def return_hostname():
    return "This is an example wsgi app served from {} to {}".format(socket.gethostname(), request.remote_addr)

if __name__ == "__main__":
    app.run(host='0.0.0.0')