__init__.py 文件源码

def ping_google(sitemap_url=None, ping_url=PING_URL):
    """
    Alerts Google that the sitemap for the current site has been updated.
    If sitemap_url is provided, it should be an absolute path to the sitemap
    for this site -- e.g., '/sitemap.xml'. If sitemap_url is not provided, this
    function will attempt to deduce it by using urlresolvers.reverse().
    """
    if sitemap_url is None:
        try:
            # First, try to get the "index" sitemap URL.
            sitemap_url = urlresolvers.reverse('django.contrib.sitemaps.views.index')
        except urlresolvers.NoReverseMatch:
            try:
                # Next, try for the "global" sitemap URL.
                sitemap_url = urlresolvers.reverse('django.contrib.sitemaps.views.sitemap')
            except urlresolvers.NoReverseMatch:
                pass

    if sitemap_url is None:
        raise SitemapNotFound("You didn't provide a sitemap_url, and the sitemap URL couldn't be auto-detected.")

    if not django_apps.is_installed('django.contrib.sites'):
        raise ImproperlyConfigured("ping_google requires django.contrib.sites, which isn't installed.")
    Site = django_apps.get_model('sites.Site')
    current_site = Site.objects.get_current()
    url = "http://%s%s" % (current_site.domain, sitemap_url)
    params = urlencode({'sitemap': url})
    urlopen("%s?%s" % (ping_url, params))