{"record":{"id":"1c04179c96a569ab","repo":"keras-team/keras","slug":"expected-padding-to-be-a-tuple-of-2-tuples-of-2","errorCode":null,"errorMessage":"Expected `padding` to be a tuple of 2 tuples of 2 integers. Received: padding={padding}","messagePattern":"Expected `padding` to be a tuple of 2 tuples of 2 integers\\. Received: padding=(.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/legacy/backend.py","lineNumber":2016,"sourceCode":"        valid_mask = tf.reshape(valid_mask, res_shape)\n        res = tf.scatter_nd(tf.where(valid_mask), res, res_shape)\n        res._keras_mask = valid_mask\n\n        return res\n\n    if update_shape and output_rank >= 3:\n        # If our output includes timesteps or\n        # spatial dimensions we need to reshape\n        res = tf.reshape(res, output_shape[:-1])\n\n    return res\n\n\n@keras_export(\"keras._legacy.backend.spatial_2d_padding\")\ndef spatial_2d_padding(x, padding=((1, 1), (1, 1)), data_format=None):\n    \"\"\"DEPRECATED.\"\"\"\n    if len(padding) != 2 or len(padding[0]) != 2 or len(padding[1]) != 2:\n        raise ValueError(\n            \"Expected `padding` to be a tuple of 2 tuples of 2 integers. \"\n            f\"Received: padding={padding}\"\n        )\n    if data_format is None:\n        data_format = backend.image_data_format()\n    if data_format not in {\"channels_first\", \"channels_last\"}:\n        raise ValueError(f\"Unknown data_format: {data_format}\")\n\n    if data_format == \"channels_first\":\n        pattern = [[0, 0], [0, 0], list(padding[0]), list(padding[1])]\n    else:\n        pattern = [[0, 0], list(padding[0]), list(padding[1]), [0, 0]]\n    return tf.compat.v1.pad(x, pattern)\n\n\n@keras_export(\"keras._legacy.backend.spatial_3d_padding\")\ndef spatial_3d_padding(x, padding=((1, 1), (1, 1), (1, 1)), data_format=None):\n    \"\"\"DEPRECATED.\"\"\"","sourceCodeStart":1998,"sourceCodeEnd":2034,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/legacy/backend.py#L1998-L2034","documentation":"Error \"Expected `padding` to be a tuple of 2 tuples of 2 integers. Received: padding={padding}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/legacy/backend.py:2016 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"}