Glad it was helpful and I agree. I like to start simple and then add on little by little until I have something impressive.

Glad it helped!

Thank you too!

Glad you like them!

Thank you!

Thank you! Cheers!

Thanks

Thanks. I have not tried this. I searched the documentation and found a section called panel deploy and export that might help.

The event variable can be used. Here is an example from the documentation: m = pn.pane.Markdown("") t = pn.widgets.TextInput() def callback(target, event): target.object = event.new.upper() + '!!!' t.link(m, callbacks={'value': callback}) t.value="Some text" pn.Row(t, m) In this case the text is set to upper case. Event can also be used to get information about the variable and how it has changed, etc. As far as why it seems to be required even if not used, I am not exactly sure. The example below is from the documentation. If event is taken out - it does not work. The way the package is set up - there must be a need to have a placeholder variable there for things to work even if not used explicitly in the function but as I mentioned, the "event" variable can be used. Maybe event is required because it is used behind the scenes somehow or it could just be arbitrary. button = pn.widgets.Button(name='Click me', button_type='primary') text = pn.widgets.TextInput(value='Ready') def b(event): text.value = 'Clicked {0} times'.format(button.clicks) button.on_click(b) pn.Row(button, text) If I learn more about "event" and why it is the way it is, I'll share. By the way, I think you can use any variable you want for event.

@@RyanNoonan many thanks for the explanation. It's clear I have a lot to study for this library😁

Are you using the anaconda package manager? This error means the package has not been installed in the package environment being used. You can add packages to the anaconda package environment using terminal. I have a tutorial that might help titled: Python Create Package Environments with Anaconda Navigator.

Tk drove me mad so I gave up on it a long time ago. PyQt5 is 1_000 times better. You can use Qt Creator to quickly design the GUI and layout changes are easy. And it's cross platform. I don't know how Panels will work in it. I use Jupyter a lot so the widgets work for me.

There is some overlap, however when I think of Kivy and Tkinter I think of libraries that help build applications or mobile apps, etc. Panel is suited more for data analysis and exploration, data visualization, and interactive dashboard creation in a Jupyter Notebook environment or similar (with app deployment options). Also, Panel works well with other HoloViz libraries such as HoloViews, GeoViews, etc. Having said that, many of the same types of projects could probably be done in both Kivy (or Tkinter) and Panel.