[Lerc]

I have had a quick play around with Deno notebooks. The pain points for me were in image and UI outputs. There is such a large base of support for the Python side, it will take quite a lot of work to catch up. The various python bits seem to be quite dependent on the implementation platform though. Colab, jupyter-lab and integrated into an editor are quite different beasts.

Being able to display an entity that carried a MessagePort and a closure for communication would enable a lot there.

[jshen]

Can you give an example of UI and image outputs that don't work with deno? I'm truly curious.

[paulgb]

In the article, there’s an example where a graph object needs to be:

- converted to png

- converted into a promise of an array buffer

- awaited

- converted into a Uint8Array

- passed to Deno.jupyter.image

Just to display it in the notebook. In Python Jupyter, you can just return many types and the library/Jupyter will figure out how to render them.

A few lines of code isn’t much but in my experience for interactive coding to be productive you have to remove every bit of friction and boilerplate you can.

[jshen]

Thanks!