{"record":{"id":"c789d4fe0c35f79b","repo":"keras-team/keras","slug":"cannot-interpret-dtype-argument-expected-a-stri","errorCode":null,"errorMessage":"Cannot interpret `dtype` argument. Expected a string or an instance of DTypePolicy. Received: dtype={identifier}","messagePattern":"Cannot interpret `dtype` argument\\. Expected a string or an instance of DTypePolicy\\. Received: dtype=(.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/dtype_policies/__init__.py","lineNumber":112,"sourceCode":"    from keras.src.dtype_policies.dtype_policy import (\n        _get_quantized_dtype_policy_by_str,\n    )\n\n    if identifier is None:\n        return dtype_policy.dtype_policy()\n    if isinstance(identifier, DTypePolicy):\n        return identifier\n    if isinstance(identifier, dict):\n        return deserialize(identifier)\n    if isinstance(identifier, str):\n        if identifier.startswith(QUANTIZATION_MODES):\n            return _get_quantized_dtype_policy_by_str(identifier)\n        else:\n            return DTypePolicy(identifier)\n    try:\n        return DTypePolicy(backend.standardize_dtype(identifier))\n    except:\n        raise ValueError(\n            \"Cannot interpret `dtype` argument. Expected a string \"\n            f\"or an instance of DTypePolicy. Received: dtype={identifier}\"\n        )\n","sourceCodeStart":94,"sourceCodeEnd":116,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/dtype_policies/__init__.py#L94-L116","documentation":"Error \"Cannot interpret `dtype` argument. Expected a string or an instance of DTypePolicy. Received: dtype={identifier}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/dtype_policies/__init__.py:112 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":"7a34a03db60bf60042242d6a556fc3be119046a5","analyzedAt":"2026-08-25T21:25:25.994Z","schemaVersion":2},"datasetVersion":"2026-08-26T02:17:13.382Z"}