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David Agumya
12,285 PointsI answered the question correctly but the evaluation is incorrect. How can I challenge it
question is to produce all the even indexes in an iterable in reverser order.
my code was result = iterable[::-2]
how is this wrong ?
def first_4(word):
return word[:4]
def first_and_last_4(word):
first = word[:4]
last = word[len(word)-4:]
first.extend(last)
return first
def odds(itr):
return itr[1::2]
def reverse_evens(itr):
return itr[::-2]
1 Answer
james south
Front End Web Development Techdegree Graduate 33,271 Pointsthe way it is wrong is that you are getting every other index going backwards with [::-2], but depending on the length of the word, and thus whether the last index is odd or even, you may or may not be getting the even indices. to use [::-2] you should test for length and cut off the last index if odd; alternatively, you can slice every other index from the beginning, then reverse.
David Agumya
12,285 PointsDavid Agumya
12,285 PointsOkay, thanks I get it now.