<p><strong>At the risk of repeating myself</strong> we need to learn how to run code repeatedly. There are two forms of looping in Python, definite and indefinite. We will do definite looping first.</p> <p><strong>What is an iterator?</strong> An iterator is a rule that governs the manner in which a collection is traversed. If an object has an iterator, it is called an <em>iterable</em>. All Python container types are iterables, as we shall soon see.</p> <p><strong>Home on the <code>range</code></strong> This is an iterator that walks through an arithmetic integer sequence.</p> <p>find all scrabble words taht contain 3 or more Z, and print them out.</p>