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

Christian A. Castro
Christian A. Castro
30,501 Points
Posted by Christian A. Castro
Christian A. Castro
30,501 Points

Make a function named reverse_evens that accepts a single iterable as an argument.

Any suggestions? I'm not quite what I might be doing wrong on my end? Thank you so much in advance.

slices.py 
def first_4(num):
    return num[:4]
def first_and_last_4(num):  
    x = num [:4]
    y =num [-4:]
    return (x+y)
def odds(num):
    return num [1::2]
def reverse_evens(num):
    x = num[::2]
    for a in x:
        x.remove(a)
        return x[::-1]

1 Answer

Manish Giri
Manish Giri
16,266 Points
Manish Giri
Manish Giri
16,266 Points

I'm not sure what this loop does - 

  for a in x:
        x.remove(a)
        return x[::-1]

but you've already got the evens here - x = num[::2]. You can just reverse it by adding a [::-1] at the end - 

def reverse_evens(num):
    return num[::2][::-1]