Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.


Stuck on code challenge on python basics

Make a new variable, var_two, with "e" at index -2. Remember, negative indexes start at the right side of the iterable.

Can anyone provide the answer and explain it to me? Thank you!

1 Answer

Python has reverse index as well. For example:

string = "ABCDE"
#inde:   0 1 2 3 4 
#string[4] = string[-1]
#string[3] = string[-2]
#and so on...

It is to remember that forward index starts from 0 whereas backward index starts with -1.

Now lets talk about the question/task

we need variable that has 'e' at index -2.

var_two = "ef"
var_two = "abcef"

are both examples that has 'e' at index -2

Hope this helps.