Madelung's disease. Common Name(s) Madelung disease is a rare condition characterized by the symmetric growth of fatty tumors (lipomas) around the neck, shoulders, upper arms and/or upper trunk. It most often affects men of Mediterranean ancestry between the ages of 30 and 70 who have a history of alcohol abuse.
Iteration is the act of repeating a process, either to generate an unbounded sequence of outcomes, or with the aim of approaching a desired goal, target or result. Each repetition of the process is also called an iteration, and the results of one iteration are used as the starting point for the next iteration. In the context of mathematics or computer science, iteration (along with the related technique of recursion) is a standard building block of algorithms.
Here, x is the iterable, while y and z are two individual instances of an iterator, producing values from the iterable x. Both y and z hold state, as you can see from the example. In this example, x is a data structure (a list), but that is not a requirement. NOTE: Often, for pragmatic reasons, iterable classes will implement both __iter__() and __next__() in the same class, and have __iter__() return self, which makes the class both an iterable and its own iterator.