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

Matthew O'Brien
Matthew O'Brien
2,622 Points
Posted by Matthew O'Brien
Matthew O'Brien
2,622 Points

Is this just a cheap way out? Why doesn't this work?

My code works. I just added something I found on stackoverflow (reverse=True). I'm sorting which may not be what was intended, but the result is the same. What am I missing?

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

def first_and_last_4(iterab):
    total = iterab[:4] + iterab[-4:]
    return total

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

def reverse_evens(iter):
    total = iter[::2]
    total.sort(reverse=True)
    return total

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,441 Points

Sorting isn't necessary to reverse a list. There is also reversed() and slices

# built in command 
total = reversed(total)
# slicing
total = total[::-1]