Question in short
An example from January shows ow to use polling to apply a python callback to a change in a data source. The recent documentation on defining actions and callbacks shows how to call js code on a slider widget.
Is there a way to use the action/callback mechanism to call python functions, or should I refer to the example that uses polling?
For a simplified flask app that does not rely on the bokeh-server, I would like to attach the callback to a requests.post method to communicate with the server