Unexpected Useful Patterns

Welcome to the unexpected useful patterns guide. This section highlights Python features and idioms that may seem unusual at first but become extremely practical once you understand when to use them.

Unexpected useful patterns

Work through these topics in order to build a toolkit of concise, expressive Python patterns.

Boolean Checks with any() and all()

Counter and defaultdict

Context Managers

Loop else Blocks

enumerate() for Indexes

Generator Expressions

Match/case

Sentinel Objects

Tuple Unpacking

zip() for Parallel Iteration