As iOS and Mac become more friendly to amateur programmers, learning to code and build your own apps has never been more tempting. And you don’t need to set foot in an expensive school to do so.

Python -O won’t magically make every script faster, but in the right workloads it’s a free win—here’s how to test it safely.

This guide explores what Python is used for, how it compares to other programming languages and developer resources for building skills in Python. With over 10.1 million developers using Python, the ...