User-Defined Iterators : iter « Class « Python Tutorial

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Python Tutorial » Class » iter   11. 21. 3. User-Defined Iterators class Squares:     def __init__(self, start, stop):            self.value = start - 1         self.stop  = stop     def __iter__(self):                         return self     def next(self):                             if self.value == self.stop:             raise StopIteration         self.value += 1         return self.value ** 2 for i in Squares(1, 5):                     print i, 11. 21. iter 11. 21. 1.  Iterators 11. 21. 2.  Make a new iterator object for each new iteration 11. 21. 3.  User-Defined Iterators

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