keras-team/keras · error · ValueError

Invalid data_format: {data_format}

Error message

Invalid data_format: {data_format}

What it means

Error "Invalid data_format: {data_format}" thrown in keras-team/keras.

Source

Thrown at keras/src/legacy/backend.py:1408

    return x


@keras_export("keras._legacy.backend.resize_volumes")
def resize_volumes(x, depth_factor, height_factor, width_factor, data_format):
    """DEPRECATED."""
    if data_format == "channels_first":
        output = repeat_elements(x, depth_factor, axis=2)
        output = repeat_elements(output, height_factor, axis=3)
        output = repeat_elements(output, width_factor, axis=4)
        return output
    elif data_format == "channels_last":
        output = repeat_elements(x, depth_factor, axis=1)
        output = repeat_elements(output, height_factor, axis=2)
        output = repeat_elements(output, width_factor, axis=3)
        return output
    else:
        raise ValueError(f"Invalid data_format: {data_format}")


@keras_export("keras._legacy.backend.reverse")
def reverse(x, axes):
    """DEPRECATED."""
    if isinstance(axes, int):
        axes = [axes]
    return tf.reverse(x, axes)


@keras_export("keras._legacy.backend.rnn")
def rnn(
    step_function,
    inputs,
    initial_states,
    go_backwards=False,
    mask=None,
    constants=None,

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/legacy/backend.py:1408 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/07cbc6358615908e. Report an issue: GitHub.