Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Matte Matt
Matte Matt
2,354 Points
Posted by Matte Matt
Matte Matt
2,354 Points

I am stuck, I dont know how to do this

Any help?

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

def first_and_last_4(iterable):
    return iterable[:4] and iterable[-4:]

2 Answers

Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

When concatenating (joining) strings together, use the "+" operator instead of "and".

Aaron Loften
Aaron Loften
12,464 Points
Aaron Loften
Aaron Loften
12,464 Points

Hello.

Assuming its like javascript, you can return one value. To return multiple values, you have to bundle it into one value via an object. So....make it a list.

It should be something like...

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

def first_and_last_4(iterable):
    return [iterable[0:4], iterable[-4:]]
Steven Parker
Steven Parker
229,732 Points
Steven Parker
Steven Parker
229,732 Points

What the instructions say is to "return the first four and last four items as a single value".

Try your suggestion in the challenge and see what response it gives you!