{"record":{"id":"f510765adef32899","repo":"tensorflow/models","slug":"the-mode-is-not-implemented-s","errorCode":null,"errorMessage":"The mode is not implemented: %s","messagePattern":"The mode is not implemented: (.+?)","errorType":"exception","errorClass":"NotImplementedError","httpStatus":null,"severity":"error","filePath":"official/core/train_lib.py","lineNumber":287,"sourceCode":"        self.controller.train_and_evaluate(\n            train_steps=params.trainer.train_steps,\n            eval_steps=params.trainer.validation_steps,\n            eval_interval=params.trainer.validation_interval)\n      elif mode == 'eval':\n        self.controller.evaluate(steps=params.trainer.validation_steps)\n      elif mode == 'continuous_eval':\n\n        def timeout_fn():\n          if self.trainer.global_step.numpy() >= params.trainer.train_steps:\n            return True\n          return False\n\n        self.controller.evaluate_continuously(\n            steps=params.trainer.validation_steps,\n            timeout=params.trainer.continuous_eval_timeout,\n            timeout_fn=timeout_fn)\n      else:\n        raise NotImplementedError('The mode is not implemented: %s' % mode)\n\n    num_params = train_utils.try_count_params(self.trainer.model)\n    if num_params is not None:\n      logging.info('Number of trainable params in model: %f Millions.',\n                   num_params / 10.**6)\n\n    flops = train_utils.try_count_flops(self.trainer.model)\n    if flops is not None:\n      logging.info('FLOPs (multi-adds) in model: %f Billions.',\n                   flops / 10.**9 / 2)\n\n    if self._run_post_eval or mode == 'train_and_post_eval':\n      with self.strategy.scope():\n        return self.trainer.model, self.controller.evaluate(  # pytype: disable=bad-return-type  # always-use-property-annotation\n            steps=params.trainer.validation_steps)\n    else:\n      return self.trainer.model, {}\n","sourceCodeStart":269,"sourceCodeEnd":305,"githubUrl":"https://github.com/tensorflow/models/blob/e006f5f0d534913e49c1f1dae87364039fa607e2/official/core/train_lib.py#L269-L305","documentation":"Error \"The mode is not implemented: %s\" thrown in tensorflow/models.","triggerScenarios":"Thrown at official/core/train_lib.py:287 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"e006f5f0d534913e49c1f1dae87364039fa607e2","analyzedAt":"2026-08-24T14:09:15.576Z","schemaVersion":2},"datasetVersion":"2026-08-24T17:17:21.512Z"}