Finding last occurrence of substring in string, replacing that

python string parsing
Adam Magyar picture Adam Magyar · Jan 24, 2013 · Viewed 135.4k times · Source

So I have a long list of strings in the same format, and I want to find the last "." character in each one, and replace it with ". - ". I've tried using rfind, but I can't seem to utilize it properly to do this.

Answer

Aditya Sihag picture Aditya Sihag · Jan 24, 2013

This should do it

old_string = "this is going to have a full stop. some written sstuff!"
k = old_string.rfind(".")
new_string = old_string[:k] + ". - " + old_string[k+1:]

Related questions

How can I split and parse a string in Python?

I am trying to split this string in python: 2.7.0_bf4fda703454 I want to split that string on the underscore _ so that I can use the value on the left side.

Read More
Python code to remove HTML tags from a string

I have a text like this: text = """<div> <h1>Title</h1> <p>A long text........ </p> <a href=""> a link </a> </div>""" using pure …

Read More
Splitting on last delimiter in Python string?

What's the recommended Python idiom for splitting a string on the last occurrence of the delimiter in the string? example: # instead of regular split >> s = "a,b,c,d" >> s.split(",") >> ['a', 'b', 'c', …

Read More