Duck types

README.md

@@ -1127,7 +1127,7 @@ class MySortable:
 ```
 
 ### Iterator
-* **Any object that defines methods next() and iter() is an iterator.**
+* **Any object that has methods next() and iter() is an iterator.**
 * **Next() should return next item or raise StopIteration.**
 * **Iter() should return 'self'.**
 ```python

index.html

@@ -1072,7 +1072,7 @@ Z = dataclasses.make_dataclass(<span class="hljs-string">'Z'</span>, [<span clas
 
 
 <div><h3 id="iterator-1">Iterator</h3><ul>
-<li><strong>Any object that defines methods next() and iter() is an iterator.</strong></li>
+<li><strong>Any object that has methods next() and iter() is an iterator.</strong></li>
 <li><strong>Next() should return next item or raise StopIteration.</strong></li>
 <li><strong>Iter() should return 'self'.</strong></li>
 </ul><pre><code class="python language-python hljs"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Counter</span>:</span>