Sure! Here's the source code:
https://github.com/ricardbejarano/pycturesI could set up a demo if you want to.
It's a cheap Flask app that scans a given "library" directory for "album" subdirectories, which contain the pictures you want to display.
It has a big issue with image size (16 images per page, my phone takes 5MB pictures, 80MB per page is HUUUGE). Thumbnailing would be great. I'm open for PRs ;)!
If anyone knows about a better alternative... I set this up when we got back from one vacation for my relatives to easily see the pictures (without social media).