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.

Want to make a Python user grind their teeth? Just recite three words: Python is slow. In many of the ways that matter, it’s true. “Pure” Python, without external libraries written in C, is nowhere ...

Why write ten lines of code when one will do? From magic variable swaps to high-speed data counting, these Python snippets will transform your code.