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

William Forbes
William Forbes
21,469 Points

Help with first_and_last_4?

Can you see my code and see if you can figure out the heck Im doing wrong?

slices.py
def first_and_last_4(iterable):
    iterable_stage = iterable[:4]
    iterable_stage = iterable_stage + iterable[-4:]
    return iterable_stage
William Forbes
William Forbes
21,469 Points

Thank you!! And thats how I had the code originally I just changed when i couldnt get it working lol.

2 Answers

Steven Parker
Steven Parker
229,981 Points

Remember each step should add to the previous step(s).

So your original first_4 function should remain as it was for task 1, and the new function should be added to the same file (or "tab" in this case).

Otherwise, that should do just fine for task 2. :+1:

Kurt L
Kurt L
22,856 Points

It looks like it should work. Just be sure not to delete the first function from part 1:

def first_4(iterable):
    return iterable[:4]

You might also want to simplify your second function as:

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