How do I use iterators in Python?

How do I use iterators in Python?

In Python, iterators are objects that allow you to traverse through a collection, like lists or tuples. You can create an iterator using the iter() function and retrieve elements using the next() function.

Can you show me an example of creating 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

What if I want to loop through all items in the iterator?

You can use a for loop to iterate through all items. Here's how:

for item in my_list:
    print(item)

Are there built-in functions to work with iterators?

Yes! Python has several built-in functions like map(), filter(), and zip() that work with iterators.