code: def _theme_and_template_fp(self):
          
          ptheme = self._config['theme'][0]
          if ptheme == "":
              ptheme = self.site.site_config['default_theme']
          pthemedir = os.path.join(self.site.dirs['themes'], ptheme)
          ptemplate = self._config['template'][0]
          if ptemplate == "":
              ptemplate = self.site.site_config['default_template']
          ptemplatefname = os.path.join(pthemedir, ptemplate)
          return (pthemedir, ptemplatefname)
docs: Return the full paths for theme and template in this page