extractURLDomain.py

import logging
from urllib.parse import urlparse

def extractURLDomain(url):
    """
    Extracts the domain name from a given URL.
    For example: 'https://www.google.com/' would return 'google'
    
    Args:
        url (str): The URL to extract the domain name from.
    
    Returns:
        str: The domain name of the given URL.
    """
    
    logging.debug(f'Getting domain from "{url}"')
    try:
        if not isinstance(url, str):
            logging.exception(f'Input is not a string.')
            raise TypeError("Input must be a string.")
        
        parsed_url = urlparse(url)
        domain = parsed_url.netloc.split(".")
        
        if domain[0] == 'www':
            domain = domain[1]
        else:
            domain = domain[0]
        logging.debug(f'Got domain "{domain}"')
        return domain
    
    except Exception as e:
        logging.exception(f"Error extracting domain from {url}: {repr(e)}")
        return None