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

Charles McKelvey
Charles McKelvey
2,276 Points
Posted by Charles McKelvey
Charles McKelvey
2,276 Points

How do you get the reverse_evens, in terms of index, in a list from 0 to 19? [Solved]

I feel like what I am doing is right because I have tested it out in my Python terminal and seems to be fine because it is returning all even indices. An example of this is given below:

>>> n = list(range(20))
>>> n
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
>>> n[::-2]
[19, 17, 15, 13, 11, 9, 7, 5, 3, 1]

How is it not registering on this end?

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

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

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

def reverse_evens(list):
    return list[::-2]

1 Answer

Charles McKelvey
Charles McKelvey
2,276 Points
Charles McKelvey
Charles McKelvey
2,276 Points

AWESOME! FIGURED IT OUT! It would be really helpful in this challenge if it allowed you to see the output. Although I do like playing around with a terminal, it's nice to know what your results are

Thank you for the link!