from flask import Flask, Response import time  app = Flask(__name__)  def get_time():     return '<div id="time">{}</div>'.format(time.strftime('%H:%M:%S'))  @app.route('/') def index():     return """                                <script type="module" defer src="https://cdn.jsdelivr.net/npm/@sudodevnull/datastar"></script><div data-on-load="$$get('/events')">                <h1>Clock</h1>                 {}                 </div>                   """.format(get_time())  @app.route('/events') def events():     def generate():         while True:             yield 'event: datastar-fragmentn'             yield 'data:  fragment {}nn'.format(get_time())             time.sleep(1)      return Response(generate(), content_type='text/event-stream')  if __name__ == '__main__':     app.run(debug=True)