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Odane Williams
6,692 PointsI am pretty sure that is the correct code for the challenge. Why is it not passing?
The reverse_evens function should return all the items in the list in reverse order by even indexes. When ran in another program it returns the correct values.
def first_4(item):
return item[:4]
def first_and_last_4(item):
return item[:4] + item[-4:]
def odds(item):
return item[1::2]
def reverse_evens(item):
return item[-1::-2]
1 Answer
Steven Parker
231,248 PointsWell, it would work half of the time, when the list has an odd number of items. But when the list has an even number of items, it will return reverse odds instead.
To always return reverse evens, there's two basic strategies:
- compute the starting position based on the list size
- extract the even index values first, then reverse them
Either one will pass the challenge when implemented correctly.