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

Python Python Collections (2016, retired 2019) Slices Slice Functions

Posted by Daniel Noyes
Daniel Noyes
2,647 Points

I'm not sure why the function reverse_evens wouldn't return the answer they are looking for here.

I'm measuring the length of the list and based on that determining how to return the even indexes. I've tested this outside of the web based app and it works. Any ideas are greatly appreciated. Thanks.

slices.py 
def first_4(name):
    return name[0:4]

def first_and_last_4(name):
    return name[:4] + name[-4:]

def odds(index):
    return index[1::2]

def reverse_evens(evens):
    evensLen=len(evens)
    if evensLen % 2 == 0:
        return evens[-2::-2]
    else:
        return evens[-1::-2]

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Your code looks good to me. :+1: So I tested it by pasting it directly into the challenge and it passed!

Perhaps try restarting your browser?

Daniel Noyes
Daniel Noyes
2,647 Points

Thanks. You were right. I closed out and re-opened and it worked. How frustrating!? haha! Thanks for your help.