Python replace particular substring in string

Question

I need my program to replace a certain - with a variable. I've tried this but it replaces the whole thing with the varibale.

jelenleg = 8 * "-"
x = 0
guess = c
jelenleg = jelenleg[x].replace("-", guess)
print(jelenleg)

So I need this to happen:
before: --------
after: c-------
But instead what I get is this: c

Happy I could help! Also as a suggestion for the future, try maybe using a bit more descriptive titles, makes it easier to find answers! And if someone gives you the answer, you can accept it by clicking on the checkmark. — charelf
– charelf, Commented Dec 12, 2021 at 20:23
@charelf :) Sorry Im a student I started programming a month ago so Im still learning a lot (including stackoverflow) :) Thanks again — cirmi123
– cirmi123, Commented Dec 12, 2021 at 20:26
No problem, we all started somewhere, have fun programming and using Stack overflow:) — charelf
– charelf, Commented Dec 13, 2021 at 8:36

halfer · Accepted Answer · 2023-08-22 13:06:16Z

2

You can specify the count of to be replaced items:

jelenleg.replace("-", guess, 1)

will only replace one -

To replace at a particular location, I can't think of anything easier than transforming the string into a list, then replacing, then back to a string, like this:

jelenleg_list = list(jelenleg)       # str --> list
jelenleg_list[x] = guess             # replace at pos x
jelenleg = "".join(jelenleg_list)    # list --> str

edited Aug 22, 2023 at 13:06

halfer

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answered Dec 12, 2021 at 20:15

charelf

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