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Python Python Collections (2016, retired 2019) Slices Slice Functions

What is wrong with my code?

def first_4(iterable): return iterable[0:4]

def first_and_last_4(iterable): return iterable[0:4] + iterable[-4:]

def odds(iterable): for i in iterable: if iterable.index(i) % 2 != 0: return iterable[iterable.index(i)]

slices.py
def first_4(iterable):
    return iterable[0:4]

def first_and_last_4(iterable):
    return iterable[0:4] + iterable[-4:]

def odds(iterable):
    for i in iterable:
        if iterable.index(i) % 2 != 0:
            return iterable[iterable.index(i)]

2 Answers

The challenge is asking to return a slice of the odd index items, but in your code you define a for loop that for each element the index is tested for the condition and returns when it is met. So the code returns just the first odd index element.

Slices are managed using [start:stop:step]

so this could be done with

return iterable[1::2]

Thank you Eric for your explanation!