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

Posted by Timotheus Taruvinga
Timotheus Taruvinga
2,319 Points

Bummer: Didn't get the right values from `first_and_last_4`.

imagine, after testing this from the workspace these guys are still giving me that bummer. I JUST DON'T KNOW WHERE ITS COMING FROM.

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


def first_and_last_4(iterable):
    first_4=iterable[:4]
    last_4=iterable[-1:-5:-1]
    final=first_4+last_4
    return final

1 Answer

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Hi Timotheus Taruvinga

You're close. I'm just not sure where you are going for the last 4? To return items from the end of a list, you just use a negative integer followed by the colon. So, to return the last 4 items you'd use -4:
If you fix up that, the rest looks good.

One more tip: You can just return the two values instead of created a third value to hold that. So, instead of creating and then returning the final value, you could just do return first_4+last_4. (It's good to remember DRY programming).

Nice work! :) :dizzy: