What I Learned Implementing a Classifier from Scratch in Python

This post is part of the author's Learning Machine Learning series. It's based on Chapter 1 and 2 of Python Machine Learning. Machine learning can be intimidating for a newcomer. The concept of a machine learning things alone is quite abstract. How does that work in practice? In order to demystify some of the magic behind machine learning algorithms, I decided to implement a simple machine learning algorithm from scratch.