Python iterator MCQ: Circular iterator that loops indefinitely over a list.

Level 1 : Circular iterator that loops indefinitely over a list.


class CircularIterator:
    def __init__(self, data):
        self.data = data
        self.index = 0

    def __iter__(self):
        return self

    def __next__(self):
        if not self.data:
            raise StopIteration
        value = self.data[self.index]
        self.index = (self.index + 1) % len(self.data)
        return value

it = iter(CircularIterator([1, 2, 3]))
for _ in range(5):
    print(next(it), end=" ")

Author: SandhyaR | Tags: iterator | 1859+ Python FAQs | Share