Use this to convert a url like this:
    https://blog.xkcd.com/2014/07/22/what-if-book-tour/
    Into this:
    https://blog.xkcd.com

def get_domain_url(url):
    """
    Use this to convert a url like this:
    https://blog.xkcd.com/2014/07/22/what-if-book-tour/
    Into this:
    https://blog.xkcd.com
    """
    if "http://" not in url and "https://" not in url:
        return url
    url_header = url.split('://')[0]
    simple_url = url.split('://')[1]
    base_url = simple_url.split('/')[0]
    domain_url = url_header + '://' + base_url
    return domain_url