A series of articles that teaches you how to make the best use of the core Python features. The Pydon'ts are available as an e-book that you can read for free below.
Learn how to use the new frozendict built-in to create and manipulate immutable dictionaries.
frozendict
Learn how to use the sentinel built-in from Python 3.15 for placeholder values.
Why didn't sin and tan go to the party? Just cos.
