def calc_web_address(domain_name: str, port: str, local_location: str) -> str:
    if not domain_name or not port:
        return
    web_address = f'https://{domain_name}'
    if port != '443':
        web_address += f':{port}'
    if local_location:
        web_address += local_location
    return web_address


def get_first_value(lst: list):
    if lst:
        return lst[0]