FAQ: Iterables and Iterators - Combinatoric Iterator: Combinations

Frequently Asked Questions Uncategorized
1

Community%20FAQs%20on%20Codecademy%20Exercises
Community%20FAQs%20on%20Codecademy%20Exercises1000×208 141 KB

This community-built FAQ covers the “Combinatoric Iterator: Combinations” exercise from the lesson “Iterables and Iterators”.

Paths and Courses
This exercise can be found in the following Codecademy content:

FAQs on the exercise Combinatoric Iterator: Combinations

There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. Ask or answer a question by clicking reply (reply) below.

If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp.

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!
You can also find further discussion and get answers to your questions over in Language Help.

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head to Language Help and Tips and Resources. If you are wanting feedback or inspiration for a project, check out Projects.

Looking for motivation to keep learning? Join our wider discussions in Community

Learn more about how to use this guide.

Found a bug? Report it online, or post in Bug Reporting

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!

2

Hello! Could you please explain why do I get the same results with those two lines?

(1)

for combo in list(collar_combo_iterator):
  print(combo)

(2)

for combo in collar_combo_iterator:
  print(combo)

This lesson tells that “if we want to use the returned object directly, it must be explicitly converted into an iterable type (list, set, dictionary, etc) first.”

I supposed, that (2) will result with an error, but it also prints combinations. Is looping though the object not a direct usage of the the object?
Thanks in advance!

3

Iterators all have one thing in common… They are consumable, meaning they give up their values when they are polled. Converting to an iterable such as a list gives us something we can reuse or modify. If we just want to do a one and done iteration, for will consume the iterator, and we don’t need to convert for posterity.

4 Likes
4

Got it, thank you very much! :grinning:

1 Like