You run a for loop every day but might not know what’s underneath. Python iterators, generators, and yield power everything from lazy file reading to streaming API responses — here’s how to build your own.
In Parts 1-3, you mastered Python’s type() function, learned type hints and annotations, and discovered when to use duck typing versus static typing. Now it’s time to level up with advanced type patterns that separate junior developers from senior ones. Previous parts in this series…
