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Brennan Altringer
7,660 PointsWhat is going on?
I don't understand how my code is wrong. Reverse_evens works in workspaces and everywhere else I can test it. I'm crazy annoyed right now and would like to move on to the next video
def first_4(thing):
return thing[0:4]
def first_and_last_4(thing):
return thing[0:4]+thing[-4:]
def odds(thing):
return thing[1::2]
def reverse_evens(thing):
return thing[::-2]
2 Answers
Brennan Altringer
7,660 PointsWhy is this correct? This double slice was not covered in any of the material unless I missed it. If so please link to the section where it explains this or freaking change the question to be in the scope of the videos.
def reverse_evens(thing):
return thing[::2][::-1]
Renato Guzman
51,376 PointsThe challenge says it has to return even indexes in reverse. Imagine this list:
[1, 2, 3, 4]. The answer is [1, 3]. Because 1 has the index 0, and 3 has index of 2.
Following your first code, the answer will be [4, 2] which is wrong. 4 has index of 3 and 2 has the index 1. These are odd indexes.
The second code you follow first made a list with even indexes and then you reversed it which is correct.
Hope this helps!
Unsubscribed User
9,496 PointsUnsubscribed User
9,496 PointsI've taken this course in the past, and don't remember that being the answer at all. Parallel universes confirmed :D