Optimized apps and websites start with well-built code. The truth, however, is that you don't need to worry about performance in 90% of your code, and probably 100% for many scripts. It doesn't matter ...

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 ...