Harvard's free programming classes teach you how to think, debug, and adapt in an AI-driven world where knowing code matters more than ever.

Every programming language has strengths and weaknesses. Python offers many convenient programming conventions but is computationally slow. Rust gives you machine-level speed and strong memory safety ...

Python is best thought of as a dynamic but strongly typed language. Types aren’t associated with the names of things, but with the things themselves. This makes Python flexible and convenient for ...