How to use “while” loops in Python. The great thing about Python is that a lot of its statements sound like plain English, meaning you can guess what they do before you even learn!

In the early days of C, you’d occasionally see someone — probably a former Pascal programmer — write something like this: #define BEGIN { #define END } This would usually initiate… ...

If you’ve ever written any Python at all, the chances are you’ve used iterators without even realising it. Writing your own and using them in your programs can provide significant perfo… ...