Question

Anyone can help with this? Imagine the following:

def example(s):
    s = s.replace('foo', 'foo bar')
    return s

Now this will replace ‘foo’ with ‘foo bar’; But I want to do something a bit different:
* Imagine I have ‘foo something’; I want the final result to be: ‘foo something bar’

What would be the best way to make such check (if there is a ‘something’, I want to preserve it).

Anyone can help please ?

NM

Answer 1

Use the re module.

import re
def replace(s):
     return re.sub('foo(.*)', 'foo\1 bar', s)
replace('foo something') #'foo something bar'