python - Why does negative indexing to zero not work?

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/66047075/why-does-negative-indexing-to-zero-not-work

Answer 1

Simply because you didn't define a step, as seen in these docs

step Optional. Extended slice syntax. Step value of the slice. Defaults to 1.

So because you don't have a negative step to tell it to step backwards, it doesn't

Additionally -5 refers to the 5th element from the end, which is greater than 0 so because its already at an index greater than its end destination, there is nothing to do.