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Kevin Bumgarner
3,292 Pointsappears to be a bug
When I run my code in REPL it works just not on the site.
def reverse_evens(lista): return lista[::-2]
def first_4(alist):
return alist[:4]
def first_and_last_4(blist):
return blist[:4] + blist[-4:]
def odds(clist):
return clist[1::2]
def reverse_evens(lista):
return lista[::-2]
1 Answer
hamsternation
26,616 PointsWhile your formula gives the right answer for an odd named list, it does not for an even numbered list.
The prompt asks for a function that returns only even indexed iterables, so list[0,2,4,6,8...] your formula returns the right answer for odd length lists but not even ones.
def first_4(alist):
return alist[:4]
def first_and_last_4(blist):
return blist[:4] + blist[-4:]
def odds(clist):
return clist[1::2]
def reverse_evens(lista):
if len(lista) % 2 == 0:
return lista[:-1][::-2]
else:
return lista[::-2]
The revised version tests for even / odd length adjusts the list accordingly to return only the even indexes.
lmk if this helps :)
Kevin Bumgarner
3,292 PointsKevin Bumgarner
3,292 PointsPerfect thanks. Treehouse should have hinted or led with the even case.