In Python, an iterator is an object that represents a stream of data. Iterators are used to iterate over sequences like lists, tuples, dictionaries, and strings.

In all the following case you could achieve the same result without using a real iterator object, but creating an iterator object will allow us to use a simple for -loop which will make our code look ...

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… ...