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

elad shor leshem
elad shor leshem
1,916 Points
Posted by elad shor leshem
elad shor leshem
1,916 Points

reverse_evens - why im getting rejected?

the "reverse_evens" def is longer but it works, why im getting rejected? tnx

slices.py 
def first_4(arg1):
    return arg1[0:4]

def first_and_last_4(arg1):
    a = arg1[0:4]
    b = arg1[-4:]
    return a + b

def odds(arg1):
    return arg1[1::2]

def reverse_evens(arg1):
    rev_arg1 = arg1[::-1]
    return rev_arg1[::2]

1 Answer

Mike Wagner
Mike Wagner
23,559 Points
Mike Wagner
Mike Wagner
23,559 Points

With an even-length list, using your method, the function essentially returns the odd indices of the original iterable. You'll have to find a way to retrieve the even indices of the original iterable in a way that either checks and accounts for iterables of odd-length, or that satisfies the requirements of both an odd- or even-length iterable. Note: I'm referring to the original iterable as a bit of a hint at how to think of the problem.

If you need a bit more help, feel free to say something. I'll tell you now that you are incredibly close.