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

Posted by Imran Hossain
Imran Hossain
5,353 Points

slices.py

why isnt my code working ?

slices.py 
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[::-2]
Nick Kolarik
Nick Kolarik
3,747 Points

what is the question?

1 Answer

Alex Yamasaki
Alex Yamasaki
7,821 Points
Alex Yamasaki
Alex Yamasaki
7,821 Points

Hi there. This is what I Got:

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(my_list): return my_list[::2][::-1]

Reason: Your code works for going through [1, 2, 3, 4, 5] for odd length list, but it would fail due to passing an even length list. It would return wrong elements in that list.