Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial![](https://ecs-static.teamtreehouse.com/assets/views/marketing/shared/community-banner-white-47072046c51352fe6a69f5e691ff5700b28bb11d45197d7bdf066d9ea3f72d0c.webp)
![Farhan Murad](https://secure.gravatar.com/avatar/7655718461c97bfe174c0864b509d2aa?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Farhan Murad
1,920 PointsI don't know how to do this.
beatles = ["John"]
others = ["George", "Ringo"]
# Your code here
beatles.append("Paul")
1 Answer
![adrian miranda](https://secure.gravatar.com/avatar/fcdf6c268e35635a453e38444b69c7f8?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
adrian miranda
13,561 PointsYou can use the extend
method to add all the contents of a secondary list onto any other list.
main_list.extend(extra_list)
Strictly speaking, extend works on any iterable, that is, anything you can iterate through one at a time. So it might be a list, but it could also be a set, or something like range(10)
Farhan Murad
1,920 PointsFarhan Murad
1,920 PointsI am actually not sure of how to add the two list together.