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Python Python Collections (Retired) Slices Slice Functions

Lindsay Grizzard
Lindsay Grizzard
6,403 Points
Posted by Lindsay Grizzard
Lindsay Grizzard
6,403 Points

Make a function name first_and_last_4 that accepts an iterable and returns the first 4 and last 4 items in the iterable.

I can't quite figure out why this wont run. I have my index going for 0-3 (or 1-4) and my negative at -4.

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

def odds(idx):
  idx = "Oklahoma" 
  return idx[1::2]

def first_and_last_4(idx):
  idx(range(0, 50)
  print idx[:3] + idx[-4:]

1 Answer

Devin Scheu
Devin Scheu
66,191 Points
Devin Scheu
Devin Scheu
66,191 Points

Your code should look something like this:

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

first_4([66, 333, 222, 1, 1234])


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

first_4([66, 333, 222, 1, 1234])

def odds(iterable):
  return iterable[1::2]

def first_and_last_4(iterable):
  return first_4(iterable) + iterable[len(iterable)-4:]