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

Mario Velazquez
Mario Velazquez
1,828 Points
Posted by Mario Velazquez
Mario Velazquez
1,828 Points

The example states the function should reverse evens in a list

EX: with d = [1, 2, 3, 4, 5] as the input, the function would return [5, 3, 1]

d[-1::-2] returns [5,3,1] why it is marked as a wrong answer?

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

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

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

def reverse_evens(d):
    return d[-1::-2]
Blayne Holland
Blayne Holland
19,321 Points
Blayne Holland
Blayne Holland
19,321 Points

I believe the challenge might be broken. This question comes up a lot.

reanimator313
reanimator313
6,005 Points

the challenge is not broken. the question is about the index of the string or list... so if the last index is not even your code does not work. But if the last index is odd? Try an if statement or just play whit slice/slice