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… ...

This post explains how to use loops in Python. You'll learn FOR loops, WHILE loops, BREAK, ... Here, you write “while” followed by a test statement, a colon, and a code block.

Note: We use the same examples to demonstrate how to use for loops and while loops. However, for some situations, using while loops may be more appropriate than using for loops or vice versa. It is ...