from wsgiref.simple_server import make_server def application(environ, start_response): status = '200 OK' headers = [('Content-type', 'text/plain; charset=utf-8')] start_response(status, headers) return [b'Hello from WSGI!'] with make_server('', 8000, application) as httpd: print('Serving on port 8000...') httpd.handle_request()