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OOP & classes

Classes, instances, methods, dataclasses, and object-oriented design in Python.

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OOP & classes easy

How to Create an Iterable Class with __iter__ and __next__ in Python

Build custom iterable classes in Python by implementing the __iter__ and __next__ dunder methods to yield items on demand.

iterable iterator dunder-methods
Python 
class EvenNumbers:
    def __init__(self, limit):
        self.limit = limit
        self.current = 0

    def __iter__(self):
        return self

    def __next__(self):
        if self.current >= self.limit:
            raise StopIteration
        result = self.current
        self.current += 2
        return resul…
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