What are the differences between iterators and iterables?

What are the differences between iterators and iterables?

Iterables are objects that can return an iterator, while iterators are objects that keep track of their current position in the iteration.

Can you give me an example of each?

Sure! A list is an iterable, and you can get an iterator from it using the iter() function. The iterator can then be used to traverse the list.

What happens if I try to iterate over an iterable without using an iterator?

You can still loop over an iterable directly, but you won't have control over the iteration process like you do with an iterator.

Are there any performance differences between using iterators and iterables?

Yes, iterators can be more memory efficient since they generate items on-the-fly, while iterables may require storing all items in memory.