{"record":{"id":"acca21fd40f96de5","repo":"keras-team/keras","slug":"invalid-padding-expected-same-or-valid-got","errorCode":null,"errorMessage":"Invalid `padding`. Expected 'same' or 'valid'. Got: {padding}","messagePattern":"Invalid `padding`\\. Expected 'same' or 'valid'\\. Got: (.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/ops/image.py","lineNumber":1223,"sourceCode":"    output_size,\n    strides=None,\n    padding=\"valid\",\n    data_format=None,\n):\n    if isinstance(size, int):\n        size = (size, size)\n    if len(size) != 2:\n        raise ValueError(\n            \"Invalid `size`. Expected length 2 for 2D reconstruction. \"\n            f\"Got: size={size}\"\n        )\n    if len(output_size) != 2:\n        raise ValueError(\n            \"Invalid `output_size`. Expected length 2 (H, W). \"\n            f\"Got: output_size={output_size}\"\n        )\n    if padding not in (\"same\", \"valid\"):\n        raise ValueError(\n            f\"Invalid `padding`. Expected 'same' or 'valid'. Got: {padding}\"\n        )\n    _validate_reconstruct_strides(size, strides, \"reconstruct_patches\")\n    data_format = backend.standardize_data_format(data_format)\n    if data_format == \"channels_first\":\n        # Reconstruct in channels_last layout, then move channels back.\n        # Patches are (flat, gH, gW) unbatched or (B, flat, gH, gW) batched.\n        if len(patches.shape) == 3:\n            patches = backend.numpy.transpose(patches, axes=(1, 2, 0))\n        elif len(patches.shape) == 4:\n            patches = backend.numpy.transpose(patches, axes=(0, 2, 3, 1))\n        else:\n            raise ValueError(\n                \"`patches` has unexpected rank for 2D channels_first \"\n                \"reconstruction. Expected 3 (unbatched) or 4 (batched). \"\n                f\"Received shape: {patches.shape}\"\n            )\n        result = _reconstruct_patches_2d(","sourceCodeStart":1205,"sourceCodeEnd":1241,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/ops/image.py#L1205-L1241","documentation":"Error \"Invalid `padding`. Expected 'same' or 'valid'. Got: {padding}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/ops/image.py:1223 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"}