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

Clayton McDaniels
Clayton McDaniels
5,788 Points
Posted by Clayton McDaniels
Clayton McDaniels
5,788 Points

What am I doing wrong? I don't know how to make it return a single(combined) value.

What am I doing wrong? I don't know how to make it return a single(combined) value.

slices.py 
def first_4(x):
    for y in x:
        return x[0:4]
def first_and_last_4(a):
    for b in a:
        return a[0:4] and a[-1:-4:-1]

1 Answer

glasscheck
glasscheck
7,302 Points
glasscheck
glasscheck
7,302 Points

When using return, it returns from the very time it is called, so a loop is not necessary as it will return and end the execution of the code, on the very first iteration of the loop

use + instead of and

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

def first_and_last_4(a):
    return a[0:4] + a[-4:]
Clayton McDaniels
Clayton McDaniels
5,788 Points
Clayton McDaniels
Clayton McDaniels
5,788 Points

Thank you. I realized that after the post. Sometimes my brain is a little slow. But I greatly appreciate it.