Why the output of this code is 1 ?

Question

X='abcde'
Y= x[-1:]
Print(len(y))

Answer 1

I suggest you review this and read the comments on each lesson. You would be surprised to find very useful explanations of each topic.

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

Answer 2

-1 accesses the last element.

: after the first and only index means that the iterable will be read from that index to the end.

So y holds only the last element.

Two recommendations:

1.) Tell us a bit more about your question next time, for example the language;
2.) concentrate on syntax: As you wrote it, your code doesn't run at all, because you mix up capital Y and y, X and x, Print and print.