I have this regex, which works perfectly in regex101, but will not work in actual python. The find string exists in the test string, but python will not find it.

find_str = r'^([sS]*)(?<=nn)([ n-]+Once in a Lifetime Values[ n-]+?)(?=  if)([sS]+)$'
logging.info(f'Checking for existence....n -- {re.search(find_str, text)}n'

This produces a fail:

2024-05-29 16:05:23: INFO - Checking for existence....
  -- None

Any help?