How to use the sopel.web.iri_to_uri function in sopel

def process_urls(bot, trigger, urls):
    """
    For each URL in the list, ensure that it isn't handled by another module.
    If not, find where it redirects to, if anywhere. If that redirected URL
    should be handled by another module, dispatch the callback for it.
    Return a list of (title, hostname) tuples for each URL which is not handled by
    another module.
    """

    results = []
    for url in urls:
        if not url.startswith(bot.config.url.exclusion_char):
            # Magic stuff to account for international domain names
            try:
                url = web.iri_to_uri(url)
            except:
                pass
            # First, check that the URL we got doesn't match
            matched = check_callbacks(bot, trigger, url, False)
            if matched:
                continue
            # Finally, actually show the URL
            title = find_title(url)
            if title:
                results.append((title, get_hostname(url)))
    return results