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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 unsubscribe_url(self):
 """Return the absolute URL to visit to delete me."""

        server_relative = ('%s?s=%s' % (reverse('tidings.unsubscribe',
                                                args=[self.pk]),
                                        self.secret))
        return 'https://%s%s' % (Site.objects.get_current().domain,
                                 server_relative)