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

Anthony Grodowski
Anthony Grodowski
4,902 Points

The code is right as far as im concerned - what should I do in order to complete the challange?

I've tested it in the REPL and it gives the same output as needed, but the treehouse program says that it's wrong (in the last part of the challange). It'd be amazing if you could help me with this weird problem!

slices.py
def first_4(word):

    items = word[0:4]
    return items

def first_and_last_4(word):
    first = word[0:4]
    last = word[-4:]
    all=first+last
    return all

def odds(item):
    var = item[1::2]
    return var

def reverse_evens(object):
    rev = object[::-1]
    thing = rev[::2]
    return thing

1 Answer

Steven Parker
Steven Parker
229,788 Points

You've got the right idea, but currently this function will only work half of the time (when the list has an odd number of items).

To get it to work in all cases, try extracting the even indexed items first, and then reversing the result.

Anthony Grodowski
Anthony Grodowski
4,902 Points

Works! Thank you, you saved me again haha(: