Parses an Immoweb estate detail URL and returns the Immoweb estate id.

    Returns a string with the Immoweb estate id.

def parse_immoweb_link(url):
    """Parses an Immoweb estate detail URL and returns the Immoweb estate id.

    Returns a string with the Immoweb estate id.
    """
    IMMOWEB_ID_RE = re.compile(r'.*?IdBien=([0-9]+).*?')
    return IMMOWEB_ID_RE.match(url).groups()[0]