Trying to understand how [::-1] works in Python

Question

What does g(xs[:-2]) mean?

def f(xs):
    def g(ys):
        return ys[::-1]
    
    return [x-2+(2*7/4) for x in g(xs[:-2])]

It passes `xs` without last 2 elements to `g()`. – Olvin Roght Oct 27 '20 at 16:06 — Olvin Roght, Oct 27 '20 at 16:06

score 0 · Answer 1 · answered Oct 27 '20 at 16:08

0

Here's how it works, it passes xs variable (a string/list) and slices it to remove the last two elements/characters (-2 means to slice from the end of string/list) to function g()

answered Oct 27 '20 at 16:08

Wasif

14,755
3
14
34

Trying to understand how [::-1] works in Python

1 Answers1