How do I use the next() function in Python?

How do I use the next() function in Python?

The next() function in Python is used to retrieve the next item from an iterator. You can use it like this: next(iterator).

Can you give me an example of using next() with a list?

Sure! First, convert the list to an iterator using iter(). For example:

my_list = [1, 2, 3]
my_iter = iter(my_list)
print(next(my_iter))  # Output: 1
print(next(my_iter))  # Output: 2

What happens if I call next() on an exhausted iterator?

If you call next() on an exhausted iterator, it raises a StopIteration exception. You can handle this using a try-except block.

Can I provide a default value to next()?

Yes! You can provide a default value as a second argument to next(). For example:

print(next(my_iter, 'No more items'))