How to search for a specific pattern in a string using regrex

Question

I want to search for a specific pattern name in the below string using regrex. The name occur after the selfie_

for example:

name = OKAH_AGHOLOR

url = 'https://ignite-api.s3.us-east-2.amazonaws.com/live/selfie_OKAH_AGHOLOR_22342028078-IND-1619350764067.jpeg'

I have tried the below regrex expression

pattern = re.compile(r'_[A-Za-z_]+')
sequence = url
pattern.search(sequence).group()

output:

'_OKAH_AGHOLOR_'

Answer 1

Use lookarounds so the _ at the beginning and end are not included in the match.

pattern = re.compile(r'(?<=_)[a-z_]+(?=_)', re.IGNORECASE)