A "fold" is a fundamental primitive in defining operations on data structures; it's particularly important in functional languages where recursion is the default tool to express repetition. In this article I'll present how left and right folds work and ho... (more…)

Python isn't just the most-popular language for introductory CS programs and hobbyist, it's also the fastest-growing language for embedded computing. (more…)

A comprehensive tutorial for getting started with Tesseract and OpenCV for OCR in Python: preprocessing, deep learning OCR, text extraction and limitations. (more…)

A basic Ray Tracer that exploits numpy arrays and functions to work fast. - rafael-fuente/Python-Raytracer... (more…)

The first time I used Logo, it felt like magic. I could type a short sequence of simple commands, and draw beautifully complex shapes on the screen. In this tutorial, I will show you how to parse and interpret a Logo-like language in just 70 lines of code... (more…)