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Nancy Melucci
Courses Plus Student 36,143 PointsCode challenge stage 3 - first and last 4
Following on my last question, logical thinking doesn't solve this problem. I've tried:
return iterable[0:4] + iterable[-5:-1]
which doesn't get me the last 4 numbers - I fall one short. but when I do this:
return iterable[0:4] + iterable[-4:0]
It doesn't add anything so I just get the first 4.
If I can't use index 0 as my stop point, I don't understand how to get the actual last 4 numbers. This really isn't logical logic. I would appreciate help. Sorry. I always try about a billion different things before I resort to this.
Nnacy M.
def first_4(iterable):
return iterable[0:4]
def odds(iterable):
return iterable[1::2]
def first_and_last_4(iterable):
return iterable[0:4] + iterable[-5:0]
1 Answer
Kenneth Love
Treehouse Guest Teacher0 is the first item. So [-5:0] doesn't make sense without a negative step as well. Just leave off the stop argument and it'll go all the way through the end.
Nancy Melucci
Courses Plus Student 36,143 PointsNancy Melucci
Courses Plus Student 36,143 PointsHa ha 5 minutes after I posted this it came to me...YAY.
thanks and sorry....
NJM