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.

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

Why is it saying it cant find first_and_last_4?

This should pass as it works on my console

def first_4(iterable):
    iterable_list = list(iterable)

def first_and_last_4(iterable2):
    iterable_list2 = list(iterable2)
    first_four = iterable_list2[0:4]
    last_four = iterable_list2[-1:-5:-1]

    mergedlist = []
    return mergedList

1 Answer

6,605 Points

It seems like some sort of a bug. However this is my approach to this challenge which will allow you to pass it:

def first_and_last_4(a):
    result = list(a[0:4])
    return result

One thing that I would mention is that variables created inside functions are only available inside those functions, so you don't really need to make names like iterable_list and iterable_list2. Both functions can use iterable_list.