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

Jesse Ferguson
Jesse Ferguson
1,419 Points

I'm not getting the right input

I think I am close i just don't know what i am doing wrong

slices.py
iterable = ['hey', 'I', 'am', 18, 'and', 12, 1, 2, 3, 4]
def first_4(iterable):
    return iterable[:4]
def first_and_last_4(iterable):
    return iterable[:4] + iterable[-4:]

def odds(iterable):
    return iterable[1::2]
def reverse_evens(iterable):
    return iterable[::-1] + odds(iterable)

2 Answers

Hi Jesse, If you make a separate variable to store all of the even numbers from the iterable and then return the reversed version of that you will pass the challenge. Here is what I did.

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

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

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

def reverse_evens(iterable):
    slce = iterable[::2]
    return slce[::-1]

Hope this helps! Rufus

if you use your reverse_evens function on something like [1, 2, 3, 4, 5, 6] then it would return [6, 4, 2]. Hope you can find a right answer now?. You can perhaps try something like this:

def reverse_evens(iterable):
    odds = iterable[::2]
    slice = odds[::-1]
    return (slice)