server.py

from http.server import BaseHTTPRequestHandler, HTTPServer
import logging
import time

class S(BaseHTTPRequestHandler):
    def _set_response(self):
        self.send_response(200)
        self.send_header('Content-type', 'text/html')
        self.end_headers()

    def do_GET(self):
        time.sleep(5)
        self._set_response()
        self.wfile.write("hello".encode('utf-8'))

    def do_POST(self):
        time.sleep(5)
        self._set_response()
        self.wfile.write("hi".encode('utf-8'))

def run(server_class=HTTPServer, handler_class=S, port=80):
    server_address = ('', port)
    httpd = server_class(server_address, handler_class)
    logging.basicConfig(level=logging.INFO)
    logging.info('starting\n')
    try:
        httpd.serve_forever()
    except KeyboardInterrupt:
        pass
    httpd.server_close()
    logging.info('stopping\n')

if __name__ == '__main__':
    run(port=80)

https://gist.github.com/mdonkers/63e115cc0c79b4f6b8b3a6b797e485c7