How to filter null values?

[LitoMore]

I want to implement the solution for the https://github.com/getzola/zola/issues/2391.

My solution was:

set filtered_pages = paginator.pages | filter(attribute="extra.hide", value=null)

But the null won't work for null values.

Is there any way to filter those null items out?

[Keats]

I don't think it's doable right now