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

Posted by Idris Abdulwahab
Idris Abdulwahab
Courses Plus Student 2,961 Points

Slices

Quiz challenge: Please help! Make a function named reverse_evens that accepts a single iterable as an argument. Return every item in the iterable with an even index...in reverse. For example, with [1, 2, 3, 4, 5] as the input, the function would return [5, 3, 1].

I tried to solve it in two ways:

First attempt:

def reverse_evens(pull):
      return pull[-1::-2]

Second attempt:

def reverse_evens(pull):
      bravo = [:]
      give = []
      for num in bravo:
            if num%2 = 0:
            give.append(num)
      return give[-1::-1]
slices.py 
def first_4(one):
    return one[:4]

def first_and_last_4(two):
    return two[:4] + two[-4:]

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

def reverse_evens(pull):
    bravo = pull[:]
    give = []
    for num in bravo:
        if num%2 = 0:
            give.append(num)
    return give[-1::-1]