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

Gabor Szilagyi
Gabor Szilagyi
3,283 Points
Posted by Gabor Szilagyi
Gabor Szilagyi
3,283 Points

def first_and_last_4(item): return item[:4] + item[-4:] doesn't seem to be accepting that

The above worked for me, though it was rejected here.

slices.py 
def first_and_last(item):
    first4 = item[:4]
    last4 = item[-4:]
    result = sum(first4) + sum(last4)
    return result

1 Answer

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi there,

The method is called first_and_last_4 - you missed the end off.

Also, you've done the slices correctly but then used sum() which isn't required. Just use the slices you defined, add them together an return them:

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

Steve.