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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 default_change_form_template(self):
 """ Determine what the actual `change_form_template` should be. """

        opts = self.model._meta
        app_label = opts.app_label
        return select_template_name((
            "admin/{0}/{1}/change_form.html".format(app_label, opts.object_name.lower()),
            "admin/{0}/change_form.html".format(app_label),
            "admin/change_form.html"
        ))