What are some examples of iterables and iterators in Python?

What are some examples of iterables and iterators in Python?

In Python, an iterable is an object that can be looped over, like lists, tuples, and strings. An iterator is an object that implements the iterator protocol, which consists of the methods iter() and next(). For example, a list is an iterable, and when you call iter(list), it returns an iterator.

Can you give me a code example of using an iterator?

Sure! Here's a simple example:

my_list = [1, 2, 3]
my_iterator = iter(my_list)

print(next(my_iterator))  # Output: 1
print(next(my_iterator))  # Output: 2
print(next(my_iterator))  # Output: 3

What about using a for loop with an iterable?

Using a for loop is straightforward. Here's an example:

for item in my_list:
    print(item)

This will print each item in the list.

Are there any built-in functions that work with iterables?

Yes! Functions like sum(), min(), and max() can take iterables as arguments. For example:

print(sum(my_list))  # Output: 6