It think there's something wrong with your checker for challenge 4/4:

Question

It think there's something wrong with your checker for challenge 4/4:
answer: def reverse_evens(num):
                           return num[-1::-2]
does return [5,3,1]
```slices.py
def first_4(num):
    return num[:4]
def firstandlast_4(num):
    return num[:4]+num[-4::1]
def odds(num):
    return num[1::2]
def reverse_evens(num):
    return num[-1::-2]
```

Ker Zhang · Answer

i ran into same problem. The following code words in my Terminal without any problem but the challenger checker keeps reporting error.
def reverse_evens(v):
    print(v[::-2])
    return v[::-2]

Vittorio Somaschini · Answer

Hi Edgar.
I am not really sure what the first -1 would mean in this case.
But I think for this part it is easier to split the task in 2 steps inside the function.
First get the even indexed values and then reverse the order.
This will make things much easier!
If you got to this point (part 4/4), I'm sure you can do it.
;)
Vitto

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Edgar Vaquerano

Edgar Vaquerano

It think there's something wrong with your checker for challenge 4/4:

2 Answers

Vittorio Somaschini

Vittorio Somaschini

Ker Zhang

Ker Zhang