code: def attrlist(self):
          'Transform the KEY_MAP paramiter into an attrlist for ldap filters'
          keymap = self.config.get('KEY_MAP')
          if keymap:
              # https://github.com/ContinuumIO/flask-ldap-login/issues/11
              # https://continuumsupport.zendesk.com/agent/tickets/393
              return [s.encode('utf-8') for s in keymap.values()]
          else:
              return Nonf attrlist(self):
          'Transform the KEY_MAP paramiter into an attrlist for ldap filters'
          keymap = self.config.get('KEY_MAP')
          if keymap:
              # https://github.com/ContinuumIO/flask-ldap-login/issues/11
              # https://continuumsupport.zendesk.com/agent/tickets/393
              return [s.encode('utf-8') for s in keymap.values()]
          else:
              return None
docs: Transform the KEY_MAP paramiter into an attrlist for ldap filters