Why its output is an empty list.i expect 6 as output but it not come

Question

https://code.sololearn.com/c4e6ejOiXpQ9/?ref=app

Answer 1

It is printing element with index -1 which is nothing

Answer 2

Interesting situation.

You are reading from -1 rightwards until you get to index 3.

Problem: -1 is already beyond 3, so your slice is over before it even started.

Answer 3

Can you explain more simply ?I didn't understand.

Answer 4

https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2453/?ref=app