要退出：请使用“退出”，“退出”或Ctrl-D

Question

我已经使用dash app for web在spyder中编写了一个简单程序。当我运行程序时，我面临以下问题。请帮助我解决此类错误。

首先，当我运行代码时，发生了以下错误。

Unsupported operation :not writeable

然后按照Github中的讨论更改echo和secho函数的默认名称。之后，我面临以下问题

import dash
import dash_html_components as html
app = dash.Dash()
app.layout = html.Div(
        html.H1(children='Hello Dash')
)
if __name__ == '__main__':
    app.run_server(debug=True)

遇到以下错误

Running on http://127.0.0.1:8050/
Debugger PIN: 565-313-212
 * Serving Flask app "__main__" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: on
An exception has occurred, use %tb to see the full traceback.

SystemExit: 1

C:\Users\Hussnain\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py:2971: UserWarning:

To exit: use 'exit', 'quit', or Ctrl-D.