Remove substring only at the end of string

Question

I have a bunch of strings, some of them have \' rec\'. I want to remove that only if those are the last 4 characters.

So in other words I have

Answer 1

You could use a regular expression as well:

from re import sub

str = r"this is some string rec"
regex = r"(.*)\srec$"
print sub(regex, r"\1", str)