How do I reverse an index number into the character it represents in Python?

Question

I have a code in which I am attempting to reverse a certain string. I have received instructions to only use index to do this, so I used index, and came to a halt when I found this. Here is my code first, for context.

emptyList = []
Len = len(var)
for i in range(Len, 0, -1):
    emptyList.append(i)

print(emptyList)

My problem is that whenever I print the variable emptyList, I only get a list of numbers, like such: [3, 2, 1]

I want the numbers to represent their character, like 3 = G, 2 = O. How do I do that?

You don't use `index` to reverse a string. That's silly advice. — Tim Roberts, Apr 29 '21 at 23:17

Shubham Periwal · Answer 1 · 2021-04-29T23:24:59.157

0

Use emptyList.append(var[i-1]) not just i.

edited Apr 29 '21 at 23:24

answered Apr 29 '21 at 23:15

Shubham Periwal

2,198
2
8
26

1

That's fair advice, but it's going to fail, because for a 5-letter string, `i` will run 5,4,3,2,1; var[5] is out of bounds. Easy fix. – Tim Roberts Apr 29 '21 at 23:16
Yep my bad let me edit – Shubham Periwal Apr 29 '21 at 23:18
Good try, but that will miss the last letter because it doesn't generate 0. Let me fix it. – Tim Roberts Apr 29 '21 at 23:19
Is it fine now? I didn’t want to paste the whole code so just pasted the parts to be changed – Shubham Periwal Apr 29 '21 at 23:21
Well, I fixed it, and then you added the `range` line which broke it again. I think using `i-1` is more sensible than having a weird range. – Tim Roberts Apr 29 '21 at 23:22
Oh sorry I hadn’t noticed your fix let me revert. Yep gtg now thanks. Silly mistakes – Shubham Periwal Apr 29 '21 at 23:24

How do I reverse an index number into the character it represents in Python?

1 Answers1