16 - Python: Pythonic Loops Using Iterables and Iterators

In Python, an iterable is an object that can be looped over. It's any object that can return its elements one at a time. Examples of built-in iterables in Python include lists, tuples, strings, and dictionaries.

An iterator, on the other hand, is an object that produces its next value lazily, that is, one value at a time. It is an object that implements the iterator protocol, which consists of the iter and next methods.

The iter method returns the iterator object itself and is used in Python's for loop. The next method returns the next value in the iteration, and when there are no more items to return, it raises the StopIteration exception.

In short, an iterable is an object that can be iterated (looped) over, and an iterator is the object that does the actual iterating, returning the next item from the iterable each time.

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