🐥 Parsing domain names from email addresses and URLs

A quick tip on how to extract domain names from URLs and email addresses using Python:

import re

def extract_domain(input_string):
    url_pattern = r'https?://(?:www\.)?([^/?]+)'
    email_pattern = r'@([^@]+)'

    url_match = re.search(url_pattern, input_string)
    email_match = re.search(email_pattern, input_string)

    if url_match:
        return url_match.group(1)
    elif email_match:
        return email_match.group(1)
    else:
        return None

print(extract_domain('https://www.yellowduck.be')) # yellowduck.be
print(extract_domain('pieter@yellowduck.be')) # yellowduck.be