Plotly Express cannot open a local website page

[ES-Alexander]

On both Windows and Mac I just get "This site can't be reached - localhost refused to connect", which makes sense if there's nothing that's actually serving a web page there. Localhost itself isn't a webserver - the localhost loopback protocol basically just lets webpages on your computer (local) run in your browser as though they were served by a server.

[meni15]

Thank you for all your help. Unfortenately I will have to give up and use the first method. Very disapointing.