Replacing a char at provided index in a string

Question

So I have this string: "My Wurds" and I'd like to replace the u at index 4 with o. what is the proper Python way to do that?

Show us what you have tried to solve this problem. Does it work? If not, what does not work? — , May 02 '18 at 09:40
Your question is unclear: do you want to replace the 'u' because it is a 'u' or because it is in 4th position? — Benjamin Barrois, May 02 '18 at 09:40

score 1 · Answer 1 · answered May 02 '18 at 09:43

1

You could build a new string using slices:

s = "My Wurds"
t = s[:4] + "o" + s[5:]

answered May 02 '18 at 09:43

-1. it only works for this particular case when input string is "My Wurds". I don't think it is an intent of any program to hardcode input values – Artemious May 02 '18 at 09:46
3

@Artemious It really isn't difficult to take his example and encode it into a function, t = s[:index] + value + s[index+1:], really no reason for down-voting. – Rohi May 02 '18 at 09:50
@Artemious It is: `Because of the index – Pavel Zagalsky` – May 02 '18 at 09:57

score 0 · Answer 2 · answered May 02 '18 at 09:48

0

If you know the index of u where you need to replace with o, a pretty straight approach would be:

s[:4] + s[4:].replace('u', 'o', 1)

replace('u', 'o', 1) will ensure replace of only first occurance.

answered May 02 '18 at 09:48

Austin

2 Answers2