Lesson 18 — Mini project: blog logic

Combine filter and sort

A blog home page shows published posts, newest first. That is two steps you already know: filter (pub is True) and sort by date descending. In Django: Post.objects.filter(pub=True).order_by("-d").

sorted(rows, key=lambda r: r["score"], reverse=True)

Note: the exercise runs in your browser without Django installed, so it is a small plain-Python simulation of what Django does for you.

Why it matters: real features are small steps combined — this exact query runs on most blogs in the world.