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Python

Devin Kulp
Devin Kulp
892 Points

Step 4

For step 4 of slice functions I type:

def reverse_evens(porkybutter):
    return porkybutter[-2::-2]

into my console and it works perfect.

Not being accepted in the challenge however.

[MOD: added ``` python formatting. -cf]

3 Answers

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,166 Points

You need to account for various input lengths. Hint: you can use a slice of a slice. That is, first slice gets the even indexed items and the second slice reverses this evens list. This can be combined into one line.

For more help, you can see Jason Anello's in this post.

Taylor Schimek
Taylor Schimek
19,318 Points

You are assuming the -2 index is an even index.

Devin Kulp
Devin Kulp
892 Points

I just made it two seperate slices and it appeared to work fine.

Thanks Taylor!