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

Madhan Mohan Reddy Paidimarla
Madhan Mohan Reddy Paidimarla
9,484 Points
Posted by Madhan Mohan Reddy Paidimarla
Madhan Mohan Reddy Paidimarla
9,484 Points

create a function named first_4 that returns the first four items from whatever iterable is given to it.

create a function named first_4 that returns the first four items from whatever iterable is given to it.

slices.py 
first_4 = 1,2,3,4
Tlotlo Molokwe
Tlotlo Molokwe
16,594 Points

try def first_4(num): return num[0:4]

1 Answer

James Arnold
James Arnold
3,974 Points
James Arnold
James Arnold
3,974 Points

First thing, it's asking us to create a function instead of a just a variable like what we have here. To create a function we'll use:

def first_4(ctx):
    return

So now that we have our function defined and we're passing in our value - ctx. We need to define the function to slice off the first four elements. This can be done using list slicing like so:

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