In the following example, we loop through a list of numbers, and use the variable digit to hold each number in turn: Strings in Python are considered “sequences” — they can be iterated over ...

If you’ve ever written any Python at all, the chances are you’ve used iterators without even realising it. Writing your own ... we try to use this in a for-loop instead of calling next ...

However, for some situations, using while loops may be more appropriate than using for loops or vice versa. It is better to write pseudocode (a simple outline of what you plan to do) first and get a ...

In the early days of C, you’d occasionally see someone — probably a former Pascal programmer — write something ... a classic C-style for loop inside of Python. He did it, and the journey ...