{"record":{"id":"dd17b541286887e7","repo":"keras-team/keras","slug":"padding-should-have-3-elements-received-paddi","errorCode":null,"errorMessage":"`padding` should have 3 elements. Received: {padding}.","messagePattern":"`padding` should have 3 elements\\. Received: (.+?)\\.","errorType":"validation","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/layers/reshaping/zero_padding3d.py","lineNumber":73,"sourceCode":"        - If `data_format` is `\"channels_first\"`:\n          `(batch_size, depth, first_padded_axis, second_padded_axis,\n          third_axis_to_pad)`\n    \"\"\"\n\n    def __init__(\n        self, padding=((1, 1), (1, 1), (1, 1)), data_format=None, **kwargs\n    ):\n        super().__init__(**kwargs)\n        self.data_format = backend.standardize_data_format(data_format)\n        if isinstance(padding, int):\n            self.padding = (\n                (padding, padding),\n                (padding, padding),\n                (padding, padding),\n            )\n        elif hasattr(padding, \"__len__\"):\n            if len(padding) != 3:\n                raise ValueError(\n                    f\"`padding` should have 3 elements. Received: {padding}.\"\n                )\n            dim1_padding = argument_validation.standardize_tuple(\n                padding[0], 2, \"1st entry of padding\", allow_zero=True\n            )\n            dim2_padding = argument_validation.standardize_tuple(\n                padding[1], 2, \"2nd entry of padding\", allow_zero=True\n            )\n            dim3_padding = argument_validation.standardize_tuple(\n                padding[2], 2, \"3rd entry of padding\", allow_zero=True\n            )\n            self.padding = (dim1_padding, dim2_padding, dim3_padding)\n        else:\n            raise ValueError(\n                \"`padding` should be either an int, a tuple of 3 ints \"\n                \"(symmetric_dim1_pad, symmetric_dim2_pad, symmetric_dim3_pad), \"\n                \"or a tuple of 3 tuples of 2 ints \"\n                \"((left_dim1_pad, right_dim1_pad),\"","sourceCodeStart":55,"sourceCodeEnd":91,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/layers/reshaping/zero_padding3d.py#L55-L91","documentation":"Error \"`padding` should have 3 elements. Received: {padding}.\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/layers/reshaping/zero_padding3d.py:73 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"}