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

Posted by Munyaradzi D Sabamba
Munyaradzi D Sabamba
8,310 Points

how can i make a function that reverse evens in index?

Am stuck and need some help on slices task 4

slices.py 
def first_4(Paida):
    return Paida[0:4]
def first_and_last_4(Munyaradzi):
    return Munyaradzi[0:4] + Munyaradzi[-4:]
def odds(king):
 return king[1::2]

1 Answer

andersh
andersh
6,899 Points
andersh
andersh
6,899 Points

It is like this:

value[::-1]

In a function:

def reverse(value):
    return value[::-1]

So if you type inn:

reverse([1, 2, 3])

You get:

[3, 2, 1]

So the whole task (1-4) is:

def reverse_evens(value):
    value_rev = value[::2]
    return value_rev[::-1]

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

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

def first_4(value):
    return value[:4]