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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ping_entry(self, entry):
 """ Ping an entry to a directory. """

        entry_url = '%s%s' % (self.ressources.site_url,
                              entry.get_absolute_url())
        categories = '|'.join([c.title for c in entry.categories.all()])

        try:
            reply = self.server.weblogUpdates.extendedPing(
                self.ressources.current_site.name,
                self.ressources.blog_url, entry_url,
                self.ressources.blog_feed, categories)
        except Exception:
            try:
                reply = self.server.weblogUpdates.ping(
                    self.ressources.current_site.name,
                    self.ressources.blog_url, entry_url,
                    categories)
            except Exception:
                reply = {'message': '%s is an invalid directory.' %
                         self.server_name,
                         'flerror': True}
        return reply