# FAQ: Code Challenge: Lists - Double Index

This community-built FAQ covers the “Double Index” exercise from the lesson “Code Challenge: Lists”.

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

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2 posts were split to a new topic: What does index of lst even mean?

2 posts were merged into an existing topic: How can I check if an index is valid?

9 posts were merged into an existing topic: What does index of lst even mean?

2 posts were merged into an existing topic: How can I check if an index is valid?

3 posts were merged into an existing topic: What does index of lst even mean?

3 posts were split to a new topic: Solution Discussion for lists code challenge

4 posts were merged into an existing topic: What does index of lst even mean?

3 posts were split to a new topic: Spoiler

2 posts were split to a new topic: I’m returning the doubled value, why isn’t it working?

3 posts were merged into an existing topic: What does index of lst even mean?

A post was merged into an existing topic: Solution Discussion for lists code challenge

5 posts were merged into an existing topic: What does index of lst even mean?

A post was merged into an existing topic: Solution Discussion for lists code challenge

4 posts were merged into an existing topic: Solution Discussion for lists code challenge

A post was merged into an existing topic: What does index of lst even mean?

A post was split to a new topic: Why don’t I need an else statement?

4 posts were split to a new topic: What does *= do in python?

A post was merged into an existing topic: Solution Discussion for lists code challenge

A post was split to a new topic: Why doesn’t my solution work - code challenge lists