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

Ben Thrower
Ben Thrower
1,760 Points
Posted by Ben Thrower
Ben Thrower
1,760 Points

reverse evens

What is the problem here?

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

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

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

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

1 Answer

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

I see you've set the function up to handle the case where the list has an even number of items.

But shouldn't it also return something when the list has an odd number of items instead?