keras-team/keras · error · ValueError

Number of samples, `num`, must be non-negative.

Error message

Number of samples, `num`, must be non-negative.

What it means

Error "Number of samples, `num`, must be non-negative." thrown in keras-team/keras.

Source

Thrown at keras/src/backend/openvino/numpy.py:2690

                    "Dynamic num values not fully supported"
                )
        except Exception as e:
            raise NotImplementedError(
                "Could not extract num value from tensor"
            ) from e
    else:
        num = int(num)

    if dtype is None:
        output_type = OPENVINO_DTYPES[config.floatx()]
    else:
        output_type = OPENVINO_DTYPES[dtype]

    start = ov_opset.convert(start, output_type).output(0)
    stop = ov_opset.convert(stop, output_type).output(0)

    if num < 0:
        raise ValueError("Number of samples, `num`, must be non-negative.")

    if num == 0:
        empty_shape = ov_opset.constant([0], Type.i32).output(0)
        result = ov_opset.broadcast(
            ov_opset.constant(0.0, output_type).output(0), empty_shape
        ).output(0)
        if retstep:
            nan_step = ov_opset.constant(np.nan, output_type).output(0)
            return OpenVINOKerasTensor(result), OpenVINOKerasTensor(nan_step)
        return OpenVINOKerasTensor(result)

    if num == 1:
        result_val = start
        axis_const = ov_opset.constant([axis], Type.i32).output(0)
        result = ov_opset.unsqueeze(result_val, axis_const).output(0)
        if retstep:
            if endpoint:
                step = ov_opset.constant(np.nan, output_type).output(0)

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/backend/openvino/numpy.py:2690 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of keras-team/keras@7a34a03db6 (2026-08-25). Data as JSON: /api/errors/e56b6d5ce932a0b2. Report an issue: GitHub.