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

Karen Ku
Karen Ku
2,194 Points
Posted by Karen Ku
Karen Ku
2,194 Points

Didn't get the right values from `reverse_evens`.

why this [::-2] can't pass the challenge, but it can run fine on the terminal server.

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

Christopher Shaw
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Christopher Shaw
Python Web Development Techdegree Graduate 58,248 Points
Christopher Shaw
.a{fill-rule:evenodd;}techdegree seal-36
Christopher Shaw
Python Web Development Techdegree Graduate 58,248 Points

Good day,

For readability sake, please put an empty line between each function.

For stage 4, you don't know if the list you are given is odd or even in length. Your solution will work if it is even, not odd. You need an extra step. First get all the even values (similar to how you got the odd values), and then reverse them.