{"record":{"id":"ae314a6dfa6dd6da","repo":"keras-team/keras","slug":"the-padding-argument-must-be-one-of-valid-sa","errorCode":null,"errorMessage":"The `padding` argument must be one of 'valid', 'same'. Received: padding={padding}","messagePattern":"The `padding` argument must be one of 'valid', 'same'\\. Received: padding=(.+?)","errorType":"exception","errorClass":"ValueError","httpStatus":null,"severity":"error","filePath":"keras/src/backend/common/backend_utils.py","lineNumber":20,"sourceCode":"import math\nimport operator\nimport re\nimport warnings\n\n\ndef _convert_conv_transpose_padding_args_from_keras_to_jax(\n    kernel_size, stride, dilation_rate, padding, output_padding\n):\n    \"\"\"Convert the padding arguments from Keras to the ones used by JAX.\n    JAX starts with an shape of size `(input-1) * stride - kernel_size + 2`,\n    then adds `left_pad` on the left, and `right_pad` on the right.\n    In Keras, the `padding` argument determines a base shape, to which\n    `output_padding` is added on the right. If `output_padding` is None, it will\n    be given a default value.\n    \"\"\"\n\n    if padding.lower() not in {\"valid\", \"same\"}:\n        raise ValueError(\n            f\"The `padding` argument must be one of 'valid', 'same'. \"\n            f\"Received: padding={padding}\"\n        )\n    kernel_size = (kernel_size - 1) * dilation_rate + 1\n\n    if padding.lower() == \"valid\":\n        # If output_padding is None, we fill it so that the shape of the output\n        # is `(input-1)*s + max(kernel_size, stride)`\n        output_padding = (\n            max(kernel_size, stride) - kernel_size\n            if output_padding is None\n            else output_padding\n        )\n        left_pad = kernel_size - 1\n        right_pad = kernel_size - 1 + output_padding\n\n    else:\n        if output_padding is None:","sourceCodeStart":2,"sourceCodeEnd":38,"githubUrl":"https://github.com/keras-team/keras/blob/7a34a03db60bf60042242d6a556fc3be119046a5/keras/src/backend/common/backend_utils.py#L2-L38","documentation":"Error \"The `padding` argument must be one of 'valid', 'same'. Received: padding={padding}\" thrown in keras-team/keras.","triggerScenarios":"Thrown at keras/src/backend/common/backend_utils.py:20 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"}