code: def _init_backends(self):
          
  
          # fetch auth backends from config file
          self._backends = {}
          for section in self._config.sections():
  
              # does the section define an auth backend?
              section_components = section.rsplit('.', 1)
              if section_components[0] == 'auth.backends':
                  auth_backend = section_components[1]
                  self._backends[auth_backend] = eval(self._config.get(section, 'type'))
  
          self._logger.debug("Registered auth backends %s" % str(self._backends))
docs: Initialize auth backends.