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

Posted by Alex Salas
Alex Salas
3,429 Points

last 4 from a list

I must be missing something very minor. Any clue?

slices.py 
# create a function named first_4

def first_4(given_list):

    list(given_list)  # make it a list
    return given_list[:4]  # return the first four items from whatever iterable is given

# create a function called first_and_last_4

def first_and_last_4(some_list)  # Accepts single iterable

    list_1 = some_list[:4]
    list_2 = some_list[-4:]
    new_list = list_1 + list_2
    return new_list # returns the first 4 and last 4 items as a single value
Alex Salas
Alex Salas
3,429 Points

I cannot get the new_list to return the first 4 and last 4.

1 Answer

Blayne Holland
Blayne Holland
19,320 Points
Blayne Holland
Blayne Holland
19,320 Points

Your code is absolutely correct. But Looks like theres a syntax error. Add a colon after the function declaration

def first_and_last_4(some_list):

colons and semi colons get me EVERY. SINGLE. TIME. very soon you'll be so good, you'll be able to spot them from miles away. Like a sniper from seal team 6 or something. happy hunting.

Alex Salas
Alex Salas
3,429 Points

Oh my god ! - Cant believe it was that. Thank you much Blayne !