Passing data between headed UWP app and headless (background) python app

[JimSEOW]

We need examples on how to do the following tutorial with headless background python app.

How we could implement below for headless python?

<Extensions>
  <uap:Extension Category="windows.appService"
              EntryPoint="BackgroundApplication1.StartupTask">
    <uap:AppService Name="BackgroundWebService" />
  </uap:Extension>
</Extensions>