from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
class H(SimpleHTTPRequestHandler):
    def end_headers(self):
        self.send_header('Access-Control-Allow-Origin', '*')
        self.send_header('Cache-Control', 'no-store')
        super().end_headers()
ThreadingHTTPServer(('0.0.0.0', 80), H, bind_and_activate=True).serve_forever()