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Python Functional Python Functional Workhorses Map

Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer
Posted by Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer

I am confused, maybe i didn't understood the question well

Please somebody can explain to me why this code is not accepted?

maps.py 
import random

backwards = [
    'tac',
    'esuoheerT',
    'htenneK',
    [5, 4, 3, 2, 1],
]

def reverse(args):
    item = random.choice(args)
    item = item[::-1]
    return item

3 Answers

Jon Mirow
Jon Mirow
9,864 Points
Jon Mirow
Jon Mirow
9,864 Points

I'm not a pro member, so can't attempt the question but I think your function does too much. The question asks for a function that takes an iterable and returns the iterable in the reverse order. You got the method for reversing correct, but I suspect your function is trying to do something other than what is asked. It doesn't ask for you to return an iterable in reverse order chosen at random from a list of iterables, it just asks for a function that takes one iterable and reverses it.

I think the confusion may have come from the backwards list? I'm pretty sure that's just for testing your function. For example:

backwards = [
    'tac',
    'esuoheerT',
    'htenneK',
    [5, 4, 3, 2, 1],
]

def reverse(arr):
    """
    your code
    """

for x in backwards:
    print(reverse(x))

To see if your reverse function works (hint your function need only be a single return line)

Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer
Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer

Create a function named reversethat takes a single iterable item and returns a reversed version of that item.

Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer
Oszkár Fehér
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Oszkár Fehér
Treehouse Project Reviewer

This is what the quiz ask, a single iterable item and it's not specified witch item that's why I choose randomly. I could reverse the list to very easily but the question it doesn't specify this.

Nate Hawk
Nate Hawk
13,229 Points
Nate Hawk
Nate Hawk
13,229 Points

It is asking you to reverse any given iterable and not a random one. I think that's where your confusion was. So the functions input should be an iterable, then it should take that iterable, reverse it and return the result. I got caught up on any iterable, so although there are not examples in the course to this point, you will need to handle strings differently.