code: def on_new(self):
          
          interpreter, pyserver, args = self._get_backend_parameters()
          self.setup_editor(self.tabWidget.create_new_document(
              extension='.py', interpreter=interpreter, server_script=pyserver,
              args=args))
          self.actionRun.setDisabled(True)
          self.actionConfigure_run.setDisabled(True)
docs: Add a new empty code editor to the tab widget