What are iterators in Python?

What are iterators in Python?

Iterators in Python are objects that allow you to traverse through a collection, like lists or tuples, one element at a time.

How do I create an iterator in Python?

You can create an iterator by defining a class with __iter__() and __next__() methods.

Can you show me an example of a custom iterator?

Sure! Here's a simple example:

class MyIterator:
    def __init__(self, limit):
        self.limit = limit
        self.current = 0

    def __iter__(self):
        return self

    def __next__(self):
        if self.current < self.limit:
            self.current += 1
            return self.current - 1
        else:
            raise StopIteration

What is the difference between an iterator and an iterable?

An iterable is an object that can return an iterator, while an iterator is the object that actually iterates over the elements.