Performance Analysis of Python’s dict() and {}

Some time ago, during a code review, I had a discussion with a colleague of mine about preferring dict() over {} in new Python code. They argued that dict() is more readable — and expresses intent more clearly — therefore should be preferred. I wasn’t convinced by that, but at that time I didn’t have any counterarguments, so I passed.

Yet that made me wonder: what’s the difference between the dict type and {} literal expression?

14 min Kamil Rusin

Keep a Changelog

Recently I was tasked with initialization of a new Python project. One of the requirements was to prepare a changelog. I liked the idea, but my gut feeling was that the future project contributors won’t keep the changelog always up-to-date and it’s quality will decline over time. This article proposes a feature which enforces changelog updates, when it’s required to do so.